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1 CHAPTER 1 REVIEW Matter and Change SECTION 1 SHORT ANSWER Answer the following questions in the space provided. 1. Technological development of a chemical product often. (a) lags behind basic research on the same substance. (b) does not involve chance discoveries. (c) is driven by curiosity. (d) is done for the sake of learning something new. 2. The primary motivation behind basic research is to (a) develop new products. (b) make money. (c) understand an environmental problem. (d) gain knowledge. 3. Applied research is designed to (a) solve a particular problem. (b) satisfy curiosity. (c) gain knowledge. (d) learn for the sake of learning. 4. Chemistry is usually classified as (a) a biological science. (b) a physical science. (c) a social science. (d) a computer science. 5. Define the six major branches of chemistry. Modern Chemistry 1 Matter and Change
2 SECTION 1 continued 6. For each of the following types of chemical investigations, determine whether the investigation is basic research, applied research, or technological development. More than one choice may apply. a. A laboratory in a major university surveys all the reactions involving bromine. b. A pharmaceutical company explores a disease in order to produce a better medicine. c. A scientist investigates the cause of the ozone hole to find a way to stop the loss of the ozone layer. d. A pharmaceutical company discovers a more efficient method of producing a drug. e. A chemical company develops a new biodegradable plastic. f. A laboratory explores the use of ozone to inactivate bacteria in a drinkingwater system. 7. Give examples of two different instruments routinely used in chemistry. 8. What are microstructures? 9. What is a chemical? 10. What is chemistry? Modern Chemistry 2 Matter and Change
3 CHAPTER 1 REVIEW Matter and Change SECTION 2 SHORT ANSWER Answer the following questions in the space provided. 1. Classify each of the following as a homogeneous or heterogeneous substance. a. iron ore b. quartz c. granite d. energy drink e. oil-and-vinegar salad dressing f. salt g. rainwater h. nitrogen 2. Classify each of the following as a physical or chemical change. a. ice melting b. paper burning c. metal rusting d. gas pressure increasing e. liquid evaporating f. food digesting 3. Compare a physical change with a chemical change. Modern Chemistry 3 Matter and Change
4 SECTION 2 continued 4. Compare and contrast each of the following terms: a. mass and matter b. atom and compound c. physical property and chemical property d. homogeneous mixture and heterogeneous mixture 5. Using circles to represent particles, draw a diagram that compares the arrangement of particles in the solid, liquid, and gas states. 6. How is energy involved in chemical and physical changes? Modern Chemistry 4 Matter and Change
5 CHAPTER 1 REVIEW Matter and Change SECTION 3 SHORT ANSWER Answer the following questions in the space provided. 1. A horizontal row of elements in the periodic table is called a(n) 2. The symbol for the element in Period 2, Group 13, is 3. Elements that are good conductors of heat and electricity are 4. Elements that are poor conductors of heat and electricity are 5. A vertical column of elements in the periodic table is called a(n) 6. The ability of a substance to be hammered or rolled into thin sheets is called 7. Is an element that is soft and easy to cut cleanly with a knife likely to be a metal or a nonmetal? 8. The elements in Group 18, which are generally unreactive, are called 9. At room temperature, most metals are 10. Name three characteristics of most nonmetals. 11. Name three characteristics of metals. 12. Name three characteristics of most metalloids. 13. Name two characteristics of noble gases. Modern Chemistry 5 Matter and Change
6 SECTION 3 continued 14. What do elements of the same group in the periodic table have in common? 15. Within the same period of the periodic table, how do the properties of elements close to each other compare with the properties of elements far from each other? 16. You are trying to manufacture a new material, but you would like to replace one of the elements in your new substance with another element that has similar chemical properties. How would you use the periodic table to choose a likely substitute? 17. What is the difference between a family of elements and elements in the same period? 18. Complete the table below by filling in the spaces with correct names or symbols. Name of element Symbol of element Aluminum Al Calcium Ca Manganese Mn Nickel Ni Potassium K Cobalt Co Silver Ag Hydrogen H Modern Chemistry 6 Matter and Change
Matter and Change. Teacher Notes and Answers CHAPTER 1 REVIEW. Chapter 1 SECTION 1 SECTION 2. Name: Class: Date:
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