CHAPTER 1 • REVIEW Chapter Review BACK TO Everything that has mass and takes up space is matter. Have students look at the photograph on pp. 6–7. Ask them to list ten objects or substances that represent different states of matter in the photograph. Have them explain what makes each object matter. Each object has mass and takes CONTENT REVIEW CLASSZONE.COM KEY CONCEPTS SUMMARY 1.1 Matter has mass and volume. VOCABULARY matter p. 9 mass p. 10 weight p. 11 volume p. 11 up space. KEY CONCEPTS SUMMARY SECTION 1.1 Ask: Which tools are being used to measure mass and volume? a pan bal- Mass is a measure of how much matter an object contains. ance to measure mass and a graduated cylinder to measure volume Ask: Which 1.2 Volume is the measure of the amount of space matter occupies. Matter is made of atoms. VOCABULARY atom p. 16 molecule p. 18 An atom is the smallest basic unit of matter. Two or more atoms bonded together form a molecule. Atoms and molecules are always in motion. tool would you use to measure the volume of a box? a ruler or meter stick SECTION 1.2 Ask: How many different kinds of atoms formed the molecule? two 1.3 Matter combines to form different substances. VOCABULARY element p. 22 compound p. 23 mixture p. 23 SECTION 1.3 Ask: Which picture shows a pure substance? Explain. The picture on the left of the gold coins shows a pure substance. The coins contain only one substance, the element gold. Matter can be pure, such as an element (gold), or a compound (water). 1.4 SECTION 1.4 Ask: Which state of matter has a fixed volume but takes the shape of the container it is in? liquid Matter exists in different physical states. VOCABULARY states of matter p. 27 solid p. 28 liquid p. 28 gas p. 28 Review Concepts T Matter can be a mixture. Mixtures contain two or more pure substances. Solids have a fixed volume and a fixed shape. • Big Idea Flow Chart, p. T1 • Chapter Outline, pp. T7–T8 A B Liquids have a fixed volume but no fixed shape. Gases have no fixed volume and no fixed shape. 34 Unit: Matter and Energy Technology Resources Have students visit ClassZone.com or use the CD-ROM for a cumulative review of concepts. CONTENT REVIEW Engage students in a whole-class interactive review of Key Concepts. Edit content as you wish. POWER PRESENTATIONS CONTENT REVIEW CD-ROM A B 34 Unit: Matter and Energy Reviewing Vocabulary 1. weight Reviewing Vocabulary Copy and complete the chart below. If the right column is blank, give a brief description or definition. If the left column is blank, give the correct term. Term 1. Description the downward pull of gravity on an object 2. liquid 3. the smallest basic unit of matter 4. solid 5. 6. state of matter with no fixed volume and no fixed shape a combination of different substances that remain individual substances 7. matter 8. 13. A unit for measuring the volume of a liquid is the a. kilogram b. gram per cubic centimeter 3. atom 4. matter with a definite volume and shape c. milliliter d. milliliter per cubic centimeter 5. gas 6. mixture 14. The weight of an object is measured by using a scale that a. compares the mass of the object with a standard unit of mass b. shows the amount of space the object occupies c. indicates how much water is displaced by the object d. tells how hard the object is pushing or pulling on it 7. anything that has mass and takes up space 8. mass 9. a substance that contains only a single type of atom 10. molecule 11. a substance that results when two or more different types of atoms bond together 15. To find the volume of a rectangular box, a. divide the length by the height b. multiply the length, width, and height c. subtract the mass from the weight Reviewing Key Concepts d. multiply one atom’s mass by the total a measure of how much matter an object contains 9. element 10. 2. matter with a definite volume but no definite shape a particle made of two or more atoms bonded together 12. a 16. Compounds can be separated only by a. breaking the atoms into smaller pieces 13. c b. breaking the bonds between the atoms c. using a magnet to attract certain atoms 14. d d. evaporating the liquid that contains the atoms 15. b 16. b 11. compound Reviewing Key Concepts Multiple Choice Choose the letter of the best answer. 12. The standard unit for measuring mass is the a. kilogram b. gram per cubic centimeter c. milliliter d. milliliter per cubic centimeter 17. Whether a substance is a solid, a liquid, or a gas depends on how close its atoms are to one another and 17. c 18. c a. the volume of each atom b. how much matter the atoms have (Answers to items that appear on p. 36) c. how free the atoms are to move d. the size of the container 19. Particles in a solid vibrate in position. Particles in a liquid slide past one another. Particles in a gas move freely in any direction. 18. A liquid has a. a fixed volume and a fixed shape b. no fixed volume and a fixed shape c. a fixed volume and no fixed shape d. no fixed volume and no fixed shape 20. Molecules in the air are moving, hitting the dust particles, and pushing them from different directions. 21. because three one-dimensional units are multiplied Chapter 1: Introduction to Matter 35 A B 22. The molecules apply pressure inside the tire, expanding the tire. ASSESSMENT RESOURCES A ASSESSMENT BOOK • Chapter Test A, pp. 7–10 • Chapter Test B, pp. 11–14 • Chapter Test C, pp. 15–18 • Alternative Assessment, pp. 19–20 SPANISH ASSESSMENT BOOK Spanish Chapter Test, pp. 213–216 Technology Resources Edit test items and answer choices. Test Generator CD-ROM Visit ClassZone.com to extend test practice. Test Practice Chapter 1 35 A B (Answers for items 19–22 appear on p. 35.) Thinking Critically Short Answer Answer each of the following questions in a sentence or two. 23. Matter: wood, metal, water, air; Not Matter: light, sound Use the information in the photograph below to answer the next three questions. 19. Describe the movement of particles in a solid, a liquid, and a gas. 24. No; you would have carbon and oxygen atoms. A molecule is the smallest part of a compound that is still that compound. 20. In bright sunlight, dust particles in the air appear to dart about. What causes this effect? 21. Why is the volume of a rectangular object measured in cubic units? 25. Like a liquid, sand has a definite volume but takes the shape of its container as sand grains slide around. Unlike a liquid, sand is made up of individual grains that each have a definite volume and a definite shape. 50 mL 58 mL 22. Describe how the molecules in the air behave when you pump air into a bicycle tire. Thinking Critically 23. CLASSIFY Write the headings Matter and Not Matter on your paper. Place each of these terms in the correct category: wood, water, metal, air, light, sound. 26 Many of the gas molecules escape into the air outside the ball. 24. INFER If you could break up a carbon dioxide molecule, would you still have carbon dioxide? Explain your answer. 27. Mixtures: substances remain the same, separated by physical means, percentages of substances can vary; Compounds: new substances formed, separated by breaking bonds, percentages of substances fixed; Alike: combinations of substances 25. MODEL In what ways is sand in a bowl like a liquid? In what ways is it different? 26. INFER If you cut a hole in a basketball, what happens to the gas inside? 31. INFER One way to find the volume of a marble is by displacement. To determine a marble’s volume, add 50 mL of water to a graduated cylinder and place the marble in the cylinder. Why does the water level change when you put the marble in the cylinder? 32. CALCULATE What is the volume of the marble? 33. PREDICT If you carefully removed the marble and let all of the water on it drain back into the cylinder, what would the volume of the water be? Explain. 27. COMPARE AND CONTRAST Create a Venn diagram that shows how mixtures and compounds are alike and different. 28. The ball is a solid; the molecules are fixed in place and cannot move easily. 29. 720,000 cm3 30. 2 trips 31. The marble displaces the liquid. 32. 8 mL or 8 cm3 28. ANALYZE If you place a solid rubber ball into a box, why doesn’t the ball change its shape to fit the container? 34. SYNTHESIZE Look back at the photograph on pages 6–7. Describe the picture in terms of states of matter. 29. CALCULATE What is the volume of an aquarium that is 120 cm long, 60 cm wide, and 100 cm high? 35. WRITE Make a list of all the matter in a twometer radius around you. Classify each as a solid, liquid, or gas. 30. CALCULATE A truck whose bed is 2.5 m long, 1.5 m wide, and 1 m high is delivering sand for a sand-sculpture competition. How many trips must the truck make to deliver 7 cubic meters of sand? 33. 50 mL; the volume of the water does not change and the marble is no longer displacing any of it. If you are doing a unit project, make a folder for your project. Include in your folder a list of the resources you will need, the date on which the project is due, and a schedule to track your progress. Begin gathering data. 34. Answers should categorize items as solids, liquids, and gases. 35. Answers might include water (liquid), air (gas), and table (solid). A B 36 Unit: Matter and Energy MONITOR AND RETEACH Give students the appropriate Unit Project worksheets from the URB for their projects. Both directions and rubrics can be used as a guide. R Unit Projects, pp. 5–10 If students have trouble applying the concepts in items 29–33, suggest that they review pp. 12–13. Have students make a table that lists standard units of volume in one column and describes the units in the other column. Students may benefit from summarizing one or more sections of the chapter. R A B 36 Unit: Matter and Energy Summarizing the Chapter, pp. 81–82
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