chocolate chip cookie homogeneous or heterogeneous

is resistant to corrosion Period 2 Deposition, Calculate the heat change at 0 C for each of the following, and indicate whether heat was absorbed/released: In a heterogeneous mixture the substances are not evenly distributed (chocolate chip cookies, pizza, rocks) I Indicate the segment of the graph that corresponds to each of the following: As was the case with the physical properties of chemistry that were defined in the previous chapter, specific rules must be followed when writing elemental symbols. Cl are one-or two-letter abbreviations for the names of the elements, Write the symbols for the following elements: of body fluids. S If no subscript is written, an unwritten "1" is understood, as was the case for several of the numerical quantities that were discussed in the previous chapter. Classify each substance as homogeneous or heterogeneous and explain your reasoning. 3. B) A compound can be physically separated into its components; a mixture cannot be physically separ. There is one sublevel in the n=1 energy level. Is calamine lotion an example of a heterogeneous or homogenous mixture? 2. Chemistry Link to Health: Elements 3p sublevel 1. Explain. 2. A chocolate-chip cookie does not have a uniform composition, which makes it a heterogeneous mixture. Sugar and sand form a heterogeneous mixture. 7. tin A mixture contains two or more substances. Salt water is an example of a homogeneous mixture, as it contains two distinctive chemicals, a "salt," which is most likely sodium chloride, NaCl, and water,H2O. 2. n=2 Na 5. has a melting point of 220 C, 1. A tree is cut into boards at a sawmill = physical Heterogeneous Mixtures: When two or more substances and mechanically mixed, they form a type of mixture whose. Is this a homogeneous or heterogeneous mixture? Explain. Again, the elements are present in a one-to-one ratio, as neither elemental symbol has an explicitly-written subscript. Chocolate chip cookies and soda are examples of heterogeneous mixture. If the temperature drops to -11 C, what is it in degrees Fahrenheit? This same amount of heat is released when 1 g of water vapor (gas) changes to liquid at 100 C. 4. . Is baking soda (NaHCO3) classified as a mixture or a pure substance? 5d sublevel. Elements cannot be broken down into simpler substances. 3. is found outside the nucleus Chocolate is made up of multiple ingredients (such as cocoa, oils, and sugar, as well as milk). makes up 55 to 60% of our body mass. 3. fruit salad lithium, He=helium <> A salad dressing is prepared with oil, vinegar, and chunks of blue cheese. Explain. 99.2 cal -Condensation occurs at the same temperature as boiling. Baby oil appears to be uniformed, the molecular level, so it's homogeneous chocolate chip cookies, definitely not uniformed. Nitrox, a combination of oxygen and nitrogen used to fill scuba tanks. 3. ice (H2O) What is a heterogeneous mixture? Tamang sagot sa tanong: Mixtures Write 10 examples of heterogeneous and Write 10 examples of homogeneous - studystoph.com 7. Chocolate chip cookies are a heterogeneous mixture. Explain. Se A heterogenous mixture is that mixture in which the composition is not uniform throughout . 1100 cal, The energy needed to keep a 75-watt light bulb burning for 1.0 h is 270 kJ. Explain the difference between a pure substance and a mixture. Every spoonful of the cereal is different; it will contain a different amount of certain oat and marshmallow shapes. Li How can you tell, if a liquid is a compound and not a homogenous substance? a) the number of electrons 6. barium Chocolate chip ice cream is a heterogeneous mixture. b) Al . The mixture is homogeneous because if several samples were taken, each sample would contain both salt and water in the same relative ratio, making every sample "equally salty. copyright 2003-2023 Homework.Study.com. . Explain. (a) KCl is the solute in a homogeneous mixture (b) KCl is the solute in a heterogeneous mixture (c) KCl is the solvent in a homogeneous mixture (d) KCl is the solvent in a heterogeneous mixture. -same shape as their container 4. titanium Choose the homogeneous mixture from the list below. The first bite of the cookies is the same in just about every way, all the way to the end of the cookies. HETEROGENEOUS MIXTURES A heterogeneous mixture consists of visibly different substances or phases. There is a maximum of 32 electrons in the n=4 energy level. Define the following terms. How can you separate components in a mixture? Examples of homogeneous mixtures . endobj calcium 5. Hydrogen reacts readily with oxygen. 6. nonmetal mass number - atomic number, Carbon 6p, 6e 2. - electrons that occupy a large, empty space around the - good conductors of heat and electricity Ahomogeneous mixturehas a uniform composition, meaning that if several samples are taken, each would contain the same chemicals in approximately the same ratio. How can you tell just by looking if a mixture is most likely homogeneous or heterogeneous? A patient has a temperature of 40.2C 4. manganese Discuss with an example: 1. You aren't able to separate the ingredients in the sauce or the dough. The difference between homogeneous and heterogeneous is whether not the composition and appearance of the substance is consistent throughout. Heterogeneous mixture. What is a homogeneous mixture? Explain. 4. 4. a skier at the top of a hill, 1. By contrast, a mixture that is uniform in composition is a homogenous mixture. Indicate the number of each in the following: Explain. Ice cubes in cola form a heterogeneous mixture. 4. 2.1: Classifications of Matter is shared under a not declared license and was authored, remixed, and/or curated by LibreTexts. Cd =cadmium A child who fell through the ice on a lake has hypothermia with a core temperature of 32 C. The difference between homogeneous and heterogeneous is whether not the composition and appearance of the substance is consistent throughout. element compound heterogeneous mixture homogeneous mixture 2 See answers Advertisement Advertisement madison120200 madison120200 Heterogeneous mixture because you can see the things that make up the cookie Advertisement for a substance is defined as the amount of heat needed to raise the temperature of exactly 1 g of a substance by exactly 1 C. -particles that move very fast Still curious about mixtures, compounds, and solutions, or whether common materials familiar to you like iron, ammonia, soil, gold, motor oil, oxygen, brick, grape juice, beer, diamond, bleach, urine, and limestone are mixtures or pure substances? While water contains two hydrogens for every one oxygen, hydrogen peroxide (H2O2) contains a two-to-two ratio of hydrogen to oxygen. Since two elements are present, this is a compound (carbon monoxide). Describe the ability of a substance to change into a new substance. 3. 4. Melting - Gain electrons during a chemical change, - They are better conductors of heat and electricity than the nonmetals, but not as good as the metals. b) 2 A heterogeneous mixture consists of two or more phases. I A tree is cut into boards at a sawmill A patient receives 3.2 L of intravenous (IV) glucose solution. 2. joules to melt 17.0 g of ice Which of the following are homogeneous mixtures? The solid structure of a substance breaks down as liquid forms. Suggest a way to determine whether a colorless liquid is pure water or a salt solution without tasting it. Zinc In a homogenous mixture all the substances are evenly distributed throughout the mixture (salt water, air, blood). two protons The vocabulary discussed in this section is summarized below in Figure \(\PageIndex{1}\). Use examples if necessary. If you were to sample the chocolate in any given place, the appearance, consistency, and composition would be the same. True or False: When heat is added to a solid, the particles move faster. Salt and pepper form a heterogeneous mixture. sulfur 3. lost when 15.0 g of ethanol, C2H6O, cools from 60.5 C to 42.0C Pure Substance 3. a shiny element Explain. Explain. The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. In a sauna, 122 g of water is converted to steam at 100 C. Chromium is a steel-gray solid. True or False: The faster the particles move, the greater the heat or thermal energy of the substance? . Explain. - Elements are pure substances from which all other things are built. Chocolate Chips + ice cream = a heterogeneous mixture. Explore the particle size of heterogeneous mixtures and whether they can be separated. to 150 C. 3. kilocalories to heat 150 g of water from 15 C to 77 C 2. is a gas at room temperature C Explain. is the energy associated with the motion of particles. Give some examples. But this chip is chocolate, which is made up of multiple substances including cocoa/cacao, sugar, and other ingredients. the temperature is shown on the vertical axis and the loss or gain of heat is shown on the horizontal axis. Some problems require a combination of steps that include a temperature change as well as a change of state, how would you calculate to get an answer? Explain. human body. ", Aheterogeneous mixturehas a non-uniform composition, meaning that if several samples are taken, each would contain either completely different chemicals orthe same chemicals, but in different ratios. 3. 2. 3. A mixture is a blend of two or more elements or compounds, which have theirown identities and properties. . Describe each of the following as a physical or chemical property: Is gasoline a homogeneous mixture or a heterogeneous mixture? Heterogeneous Explain. Explain. The chemical formula for water contains an "H," which is the elemental symbol for "hydrogen," and an "O," which is the elemental symbol for "oxygen." What is an example of a Heterogeneous mixture? Hey there! In a heterogeneous mixture, all particles are visible because the mixture is not evenly distributed-for example, oil and water, vegetable soup, etc. Is coffee classified as an element, a compound, a homogeneous mixture, or a heterogeneous mixture? Potential Is rainwater more pure, less pure, or of the same purity as ocean water? Freezing a car speeding down the freeway= kinetic energy Chocolate is a material made up of multiple substances which do not become chemically bonded to each other. Explain the difference between homogeneous catalysis and heterogeneous catalysis. Chemical, Describe each of the following properties for the element fluorine as physical or chemical: Homogeneous mixtures can be solid, liquid, or gas. Zn You'll get a detailed solution from a subject matter expert that helps you learn core concepts. 5200 cal absorbed The particles within a liquid have enough energy to overcome their attractive forces and become a gas. In the light of above definitions: Discover the definition of heterogeneous mixtures, as well as their types and examples. A few simple examples will be mentioned here. Identify each of the following changes of state as melting, freezing, sublimation, or deposition: Your friend who is visiting from Canada just took her temperature. Chocolate chip cookies What is the name given to the homogeneous substance that has the same properties of its components? Physical 3. Instead, wed likely call it a homogeneous mixture. Wine41. 5. (a) salt dissolved in water (b) tea and ice (c) chicken noodle soup (d) mud (e) gasoline (f ) carbon di, What is the difference between a compound and a mixture? d. wood. are atoms of the same element that have the same atomic number but different numbers of neutrons. d) Electrons are much lighter than neutrons, Which of the following elements is an alkaline earth metal? d) Rb, How many electrons does an atom of He have? Lemonade has a definite volume but takes the shape of its container. Salt and pepper form a heterogeneous mixture. c) 3 2. Condensation, Using the values for the heat of fusion, specific heat of water, and/or heat of vaporization, calculate the amount of heat energy in each of the following: 3. the alkali metal in Period 3 Is sugar water classified as an element, a compound, a homogeneous mixture, or a heterogeneous mixture? 5. iron 3p sublevel Answer b: Element Is soda with ice a homogeneous mixture or a heterogeneous mixture? A chocolate chip cookie is a heterogeneous mixture, because it contains many different chemicals that form the cookie dough and the chocolate chips, which can be separated by pulling out the chips. typical physical properties include the shape, color, melting point, boiling point, and physical state of a substance. Is soil classified as an element, a compound, a homogeneous mixture, or a heterogeneous mixture? Explain the difference between a homogeneous mixture and a heterogeneous mixture. What is the difference between the two. How do the properties of a heterogeneous mixture differ from those of a solution? 2600 J 180 cal -For water, 540 cal (2260 J) is needed to convert 1 g of water to vapor at 100 C. 2. Group 4A (14), Period 2 Chocolate chip cookies are a heterogeneous mixture. d. Butter melts in a warm room. d) 4 4. tea with ice and lemon slices, 1. 2. 1. orbitals in the 3d sublevel Sugar and sand form a heterogeneous mixture. After a hot shower, your bathroom mirror is covered with water. 396 kJ released. 3. kilocalories to freeze 225 g of water 2 0 obj Chemical Is carbon dioxide classified as an element, a compound, a homogeneous mixture, or a heterogeneous mixture? a. platinum. We are obsessed with the outdoors, and work constantly to bring you the information you need to enjoy the rocks and minerals you've added to your collection. -valence electrons occupy the s and p sublevels with the highest principal quantum number n. of an atom is determined by the distance of the valence electrons from the nucleus. compounds. How can you tell that you have one or the other? Why? The gases oxygen and nitrogen have a uniform composition in nitrox, which makes it a homogeneous mixture. mass number = number of protons and neutrons 4. A. milk B. sugar water C. raisin bran D. air E. none of the above. A sandwich is a heterogeneous mixture. Explanation:Since the "o" is lower-case, it must be the second letter of the elemental symbol beginning with a capital "C". Classify each of the following as a pure substance or a mixture: Classify each of the following as a compound or element: homogenized milk = Homogenous 4. kilojoules to freeze 50.0 g of water, 1. Is taking place as water particles with sufficient energy escape from the liquid surface and enter the gas phase. Is isopropyl alcohol a heterogeneous or homogeneous mixture? The particles in an ice cube are held in a rigid structure. 5. Fruit salad42. of an element is equal to the number of protons in every atom of that element. b) the number of protons c) the number of neutrons, Which of the following has a higher ionization energy? Cl other elements. 5400 cal absorbed Classify each of the following as a physical or chemical change: Graphic on the left of "Dancing Raisins" shows liquid, solid, and gas substances in a heterogeneous mixture. There is a maximum of 10 electrons in the 5d sublevel. 1. calories to melt 65 g of ice is found in the larger part of the atom= electron 98.6 F Halo-halo44. a) all matter is made up of small pieces called atoms What is this temperature in degrees Fahrenheit? The halogens, especially fluorine and chlorine, are highly reactive and form compounds with most of the elements. 4. Heterogeneous: 1)chocolate chip cookie 2)soup 3)earth 4)cookie dough ice cream 5)trail mix 18 Somesh Saurabh High school undergraduate Author has 117 answers and 745.4K answer views 6 y Homogeneous mixtures have the same composition throughout. kilojoules: 880 kJ. The 1s, 2s, and 3s orbitals are all spherical, but they increase in volume because the electron is most likely to be found farther from the nucleus for higher energy levels. No, chocolate pudding is not a pure substance. Give examples of an element, a compound, a heterogeneous mixture, and a homogeneous mixture. Salt and pepper form a heterogeneous mixture. 1380 J, 330. cal 3. d) B, What period is Ca in? 4. 3500 cal to kcal - 80. cal (334 J) of heat is needed to melt exactly 1 g of ice at its melting point (0 C). Phosphorus will ignite when exposed to air 1. copper The neon atoms in a lighting display do not interact with each other. -The substance is melting, changing from a solid to a liquid. sulfur, Al 13p, 14n, 13e (a) baby oil (b) chocolate chip cookie (c) water and gasoline (d) wine Classify each mixture as homogeneous or heterogeneous. Pizza is a homogeneous and heterogeneous mixture, because the toppings you are able to separate. Explain. a) 0 -A liquid changes to a solid at the freezing point (fp), which is the same temperature as its melting point: 0 C. 7. boron What is a heterogeneous mixture quizlet? 37.0C=F - Are not especially shiny, ductile, or malleable, and they are often poor conductors of heat and electricity. Ar, Biology Cells - Cells Fractionation and Ultra, Chemistry: An Introduction to General, Organic, and Biological Chemistry, Klaus Theopold, Paul Flowers, Richard Langley, William R. Robinson, PTA Techniques: Ch. ). 2. to heat 38.0 g of copper from 122 C to 246 C Get access to this video and our entire Q&A library, Heterogeneous Mixture: Definition & Examples. A homogeneous mixture has the same uniform appearance and composition throughout. 3. which is the total number of protons and neutrons in its nucleus. You can get bites without any chocolate. Is a chocolate chip cookie an example of a heterogeneous or homogenous mixture? If you had chocolate that had added extras that were not consistent and uniform throughout, then it would be a heterogeneous mixture. Butane gas in an igniter burns in oxygen. have a good day. a proton and an electron = no Chocolate chip cookies are a heterogeneous mixture. If you take a bite from a cookie, you may not get the same number of chips as you get in another bite. -particles that are far apart. Classify each of the following as a physical or chemical change: lithium = Li, Write the symbol for the following elements: 3. kilojoules needed to melt 24.0 g of ice at 0 C, warm the liquid to 100 C, and change it to steam at 100 C. There are two kinds of pure substances: elements and compounds. a) C In the case of chocolate, there are many substances which are mixed together to make the chocolate that we know and love. Explain. - Alkali metals react vigorously with water and form white products when they combine with oxygen. Compound, Classify each of the following as a pure substance or a mixture: Italian salad dressing heterogeneous 11. rubbing alcohol homogeneous 4. corn syrup homogeneous 12. full fat milk heterogeneous 5. soil heterogeneous 13. beach sand heterogeneous On the other hand, homogenous is a mixture too, but the elements are not. 2. kilocalories, For dinner, Charles had one cup of clam chowder, which contains 16 g of carbohydrate, 12 g of fat, and 9 g of protein. Ice cubes in cola form a heterogeneous mixture. Sugar and sand form a heterogeneous mixture. Pizza is a homogeneous and heterogeneous mixture, because the toppings you are able to separate. Homogeneous mixtures are mixtures in which the constituents don't appear separately. - The metalloids are semiconductors because they can be modified to function as conductors or insulators. Sr, Write the symbols for the following elements: They cannot be broken down through physical methods such as boiling or sifting. Element. Indicate whether each of the following describes a gas, a liquid, or a solid: a. 2. the noble gas in Period 1 . Is concrete homogeneous or heterogeneous? Drag each item to the appropriate bin. Chocolate chip cookie dough ice cream is definitely a heterogeneous mixture. 3. orbitals in the 6s sublevel a. air b. orange juice with pulp c. raw milk d. marble. What is meant by the homogeneous mixture? 4. 3. Chocolate chip cookies are a heterogeneous mixture. How many occupied energy levels are there in an atom of Li? Explain why a chlorinated swimming pool would be considered a homogenous mixture. 2. Question: Classify each of the following mixtures as homogeneous or heterogeneous: a. nonfat milk b. chocolate-chip ice cream C. gasoline d. peanut butter sandwich e. cranberry juice 2. 2. hydrogen peroxide (H2O2) Explanation:Since both the "C" and the "O" are capitalized, each must represent its own unique element (carbon and oxygen, respectively). Examples of heterogeneous mixtures include sand, oil and water, and chicken noodle soup. c) Mg A solution is a homogeneous mixture and, unlike a compound, has composition. Chocolate chip cookies are a heterogeneous mixture. Is wine classified as an element, a compound, a homogeneous mixture, or a heterogeneous mixture? 4. neutron. Chemical chemical changes. 3. The abbreviation "Hg" is derived from the Greek word "hydrargyrum,"which means "liquid silver"- a phrase that accurately represents the appearance of mercury! 2. kicking a ball Chocolate chip cookies are a heterogeneous mixture. Whats the Temperature equation that relates a Fahrenheit temperature and its corresponding Celsius temperature? Note that the elements are present in a one-to-one ratio, as neither elemental symbol has an explicitly-written subscript. 4. oxygen d. Physical. What is a mixture? Advertisement Advertisement For this reason, it is not a pure substance. - Melting point: 962 Celsius the composition is uniform throughout the sample.We cannot see the individual components, which appear as one state. Sugar solution37. ignites spontaneously in air when finely divided= chemical, Describe each property of the element zirconium as physical or chemical Explain why a suspension is considered a heterogeneous mixture? Answer and Explanation: A homogeneous mixture is the one which has the same uniform appearance and composition while heterogeneous mixture is the one which has visibly different substances and they are really unmixed. Explain. On Earth, matter exists in one of three physical forms called the states of matter: -has a definite shape and volume A=(12311000)\mathbf{A}=\left( \begin{array}{rrrr}{-1} & {2} & {3} & {1} \\ {1} & {0} & {0} & {0}\end{array}\right) Is a chocolate chip cookie an example of a heterogeneous or homogenous mixture? carbon Give some examples. a. (a) baby oil (b) chocolate chip cookie (c) water and gasoline (d) wine Question Classify each mixture as homogeneous or heterogeneous. -atomic size increases going from the top to the bottom because the outermost electrons in each energy level are farther from the nucleus. an electron and a neutron = no, Which of the following pairs of particles have the same charges? 1. Elements Na = sodium Helium, which is used to inflate balloons, is also an element. What did Rutherford determine about the structure of the atom from his gold-foil experiment? Pizza is a homogeneous and heterogeneous mixture, because the toppings you are able to separate. -25C to C -25 C, Solve the following temperature conversions: A mixture is a material which contains more than one substance. A hot tub reaches a temperature of 40.6 C. A pure substance is a form of matter that has a definite composition. 1. Homogeneous mixture. Ca - are extremely tiny particles that make up each type of matter. Since two elements are present, this is a compound (sodium chloride, which is more commonly-known as "table salt.") O. The mixture is heterogeneous because if several samples were taken, each sample would contain a different number of chocolate chips, making every sample "unequally chocolatey.". Explain. Chocolate chip cookies are a heterogeneous mixture. What is a solution? Explain. 6. What is this change of state? Describe an example of a homogeneous and heterogeneous mixture. Wet clothes dry on a clothesline. - Density: 6.7g/mL 3. metal However, each of these "things" has its own distinct characteristics and, therefore, can be classified using more specific terminology. a. mass number a) F Explain. A heterogeneous mixture contains particles of different shapes or sizes and the composition of one sample may differ from that of another sample. No, chocolate is not considered a pure substance. 4. The LibreTexts libraries arePowered by NICE CXone Expertand are supported by the Department of Education Open Textbook Pilot Project, the UC Davis Office of the Provost, the UC Davis Library, the California State University Affordable Learning Solutions Program, and Merlot. a) Ca 4. Gold is hammered into thin sheets Explain. gasoline = Homogenous For which of the following can the composition vary? How many kilojoules did the swimmer expend? It contains water, sugar, and carbon dioxide, which forms bubbles. - Density: 10.5g/mL a) Most atoms have more electrons than protons Alcohol43. 14 - Electric Stimulation. How many kilojoules of heat are needed? Se There is a maximum of six electrons in the 3p sublevel. is anything that has mass and occupies space. 5. the energy in your food A homogenous mixture is that mixture in which the components mix with each other and its composition is uniform throughout the solution. At room temperature, mercury is a liquid = physical, Describe each of the following as a physical or chemical property: 1. 3. Determine whether each of the following is homogeneous or. A bar of chocolate would be considered a mixture. If 260. g of ice is placed in an ice bag, how much heat, in kilojoules, will be released when all the ice melts at 0 C? Figure 2.9 Oil and water do not mix, instead forming two distinct layers called phases. You can easily see that it is made out of different oat shapes and different marshmallows. - They typically have low melting points and low densities. There is one orbital in the 6s sublevel. These compounds can be separated by boilingthe water, leaving the salt as a residue. Homogeneous and Heterogeneous Mixtures The physical combination of two or more components is called a mixture. 8. 5. methane (CH4) in natural gas, 1. 65.3F=C If the same amount of heat is supplied to samples of 10.0 g each of aluminum, iron, and copper, all at 15.0 C, which sample would reach the highest temperature? Explain your answers. What is that temperature in degrees Fahrenheit? Therefore salt water is a homogeneous mixture. Why not? A heterogeneous mixture is : made of different substances that remain physically separate (General Chemistry Online). Water on the street turns to ice during a cold wintry night. What best describes homogeneous mixture . 415 J to cal A homogeneous mixture is a mixture in which the composition is uniform throughout the mixture. Coffee is freeze-dried. \\ 1. solution 2. solute 3. solvent 4. heterogeneous 5. homogeneous 6. alloy. has a grayish-white color Charles has increased his activity by doing more exercise. stream Group 8A (18) 3. 3. n=4 energy level 1. If you took one bite of a cookie, the bite should be the same as all the rest of the bites of the cookies. For example, water (H2O) is used to extinguish fires, but dihydrogen sulfide (H2S) is highly flammable! 3. number of particles in the nucleus -particles that are close together but mobile A proton and an electron have opposite charges. fluorine (Take the masses of the proton and neutron to be the same.). 6. bromine Is each of the following statements true or false? Mixtures can be either homogeneous or heterogeneous': a mixture in which constituents are distributed uniformly is called homogeneous, such as salt in water, otherwise it is called heterogeneous, such as sand in water. - Are rearranged to form new combinations in a Food is digested, melts at 1852C = physical -Adding the same amount of heat (1.00 cal or 4.184 J) will raise the temperature of 1 g of aluminum by about 5 C and 1 g of copper by about 10 C. Question: Classify each of the following as a pure substance or a mixture; if it is a mixture, state whether it is heterogeneous or homogeneous: (a) concrete, (b) tomato juice, (c) marble, (d) seawater, and (e) iron. Note that chemical names consist of words that resemble elemental names, and chemical formulas contain elemental symbols. The substances in the material do not become chemically bonded to each other, which means that they can be separated fairly easily (meaning without having to force a chemical reaction to make it happen). 3. Salt and pepper form a heterogeneous mixture. e) atomic numbers identify elements, What is the difference between two isotopes of an atom? A chocolate-chip cookie. c. bronze. 4. nonmetal the simplest type of a pure substance, is composed of only one type of material. "Aluminum," "helium," and "carbon" are all examples ofelemental names. - To determine the heat needed to boil a sample of water, the mass, in grams, is multiplied by the heat of vaporization. 4. -most of our hydrogen and oxygen is found as water, which 2. Explain. 2. (Round off the answer for each food type to the tens place. A homogeneous mixture appears uniform, regardless of where you sample it. A pure substance is one that is made up of one building block. 1. is highly reactive Carbon oxygen =O In most technical applications homogeneous means that the properties of a system are the uniform throughout the entire system; heterogeneous (also inhomogeneous) means that the properties change within the system. Condensation 2. joules lost when 25 g of water cools from 86 C to 61 C Classify each of the following substances as an element, a compound, a homogeneous mixture, or a heterogeneous mixture.