Physical and Chemical Changes and Properties of Matter ...



Unit 1: Matter Review PacketDirections: Identify the following as being true or false to the left of the sentence._____ 1. A change in size or shape is a physical change._____ 2. A chemical change means a new substance with new properties was formed._____ 3. An example of a chemical change is when water freezes._____ 4. When platinum is heated, then cooled to its original state, we say this is a physical change._____ 5. When milk turns sour, this is a physical change because a change in odor does not indicate a chemical change. _____ 6. When citric acid and baking soda mix, carbon dioxide is produced and the temperature decreases. This must be a chemical change.Directions: Identify each of the following as a physical or chemical change. _____ 1. You leave your bicycle out in the rain and it rusts._____ 2. A sugar cube dissolves._____ 3. Scientists break-up water into oxygen and hydrogen gas._____ 4. Burning coal for a barbecue._____ 5. Trimming a bush because it has grown too tall.Directions: Identify each of the following as an example of a physical property or a chemical property._____ 1. Silver will tarnish when it comes in contact with hydrogen sulfide in the air. _____ 2. A banana is yellow_____ 3. A sheet of copper can be pounded into a bowl. _____ 4. Barium melts at 725 C._____ 5. Gasoline is flammable._____ 6. A diamond is the hardest natural substance._____ 7. Helium will not react with any other element. _____ 8. A bar of lead is more easily bent than is a bar of aluminum of the same size._____ 9. Potassium metal is submerged in oil to prevent contact with oxygen or water. _____ 10. An apple will turn brown if left in oxygen. _____ 11. Diamond dust can be used to cut or grind most other materials. _____ 12. Acid in tomato sauce can corrode aluminum foil. _____ 13. Rocks containing carbonates can be identified because they fizz when hydrochloric acid is applied._____ 14. A piece of charcoal, which is mostly the substance carbon, will glow red, give off heat, and become a gray ash if heated. Directions: Classify each of the following substances as an element, a compound, a solution (homogenous mixture), or a heterogeneous mixture. For any ELEMENTS, also write the symbol which can be found in the Periodic Table ( is a great reference website!)1. Sand2. Salt3. Pure Water4. Soil5. Soda just opened6. Pure air7. Carbon Dioxide8. Cheetos9. Brass10. Oxygen11. Italian Salad Dressing12. Salt Water13. Raisin Bran14. Silver15. Lithium Iodide16. Apple Pie17. Kool Aid18. Sugar Water19. Chocolate chip cookie20. Gatorade21. Gold22. Tacos23. Lead24. Caesar Salad25. Calcium26. Chocolate Milk27. Asphalt28. Hydrogen Peroxide29. Potassium30. Sugar31. Granite32. Crude Oil33. BloodDirections: Complete the table below by placing an “X” in the appropriate box for each listed property.Directions: Use the Law of the Conservation of Mass to complete the following problem.Magnesium Oxide can be formed by the reaction of magnesium metal and oxygen gas. If 46.72 grams of magnesium combines with oxygen gas to form 77.47 grams of magnesium oxide, what mass of oxygen gas must have been used in this reaction? SHOW YOUR WORK! Bonus: Write out the chemical equation for this reaction.Directions: Use the words and phrases given to complete the states of matter Venn Diagram below.Tightly packed particlesSlow moving particlesExpand when heatedLow densitiesHigh densitiesModerate densitiesSlightly compressibleVaporsEasily compressedParticles are far apartTakes shape of its containerFluidsDefinite shapeDefinite volumeTakes volume of its containerRandom motionHigh melting/boiling pointParticles slide past each otherModerate mp/bpAmorphousVarying viscositiesLow mp/bpSaltMercuryNeonMatter26955755192395GASES020000GASES402907596520LIQUIDS020000LIQUIDS402907596520LIQUIDS020000LIQUIDS1438275106045SOLIDS020000SOLIDSDirections: Use the words and phrases given to complete the concept map template given below.MatterSalt waterAirHomogeneousHeterogeneousMixtureSolutionPureElementWaterChoc. chip cookieSoilOxygenCarbonCompoundSodium chlorideDirections: Match each term below with its definition on the right.____1. SolubilityA. The ability to pound metal into a thin sheet____2. StabilityB. The shininess of a substance____3. ReactivityC. The ability of a substance to resist chemical change____4. DensityD. The ability to draw metal into a long, thin wire____5. PorosityE. The amount of solute that can dissolve in a given amount of solvent____6. MalleabilityF. The ability of a substance to absorb liquid____7. DuctilityG. The tendency of a substance to combine with another substance____8. LusterH. The ratio of a substance’s mass to its volumeDirections: Use the words below to complete the paragraph. You will use each word once.Qualitative Chemical Intensive Extensive Quantitative Physical All matter has both ________________________ properties which can be observed without changing the substance and ________________________ properties which can only be observed during a reaction. ____________________________ properties depend on the amount of matter that is present, while __________________________ properties do not. Scientific instruments must be used to make _____________________________ observations about a substance, while ______________________________ observations can be made using your senses.Directions: Answer the questions below in complete sentences.Two substances were tested and it was found that Substance A contained 75% oxygen and 25% carbon, which Substance B contained 66% oxygen and 34% carbon. Are these substances the same compound? Explain why or why not.Describe how you would separate a mixture of nickel, calcium chloride, and chalk. You may write a paragraph or give a detailed procedure. Be sure to give the name of each process you would use. ................
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