Classification of Matter

Transcription

1 Classification of Matter Choose words from the list to fill in the blanks in the paragraphs. chemical property intensive property compound mixture element physical property extensive property property heterogeneous matter substance homogenous matter Matter has uniform characteristics throughout is called (1). Matter that has parts with different characteristics is called (2). A characteristic by which a variety of matter is recognized is called a(n) (3). A characteristic that can be observed without producing new kinds of matter is called a(n) (4). A characteristic that depends on how a kind of matter changes during interactions with other kinds of matter is called (5). Matter can also be classified according to the basic types of matter it contains. A simple substance that cannot be broken down into other substances by chemical means is called (6). A chemical combination of simple substances is called (7). A physical combination of different substances that retain their individual properties is called a(n) (8). Either an element or a compound may be referred to as a(n) (9)

2 MIXTURES Classify each of the following as an element, compound, heterogeneous mixture, or homogenous mixture. 10. Water 11. Carbon 12. Air 13. Table salt, NaCl 14. Sugar dissolved in water 15. Granite 16. Homogenized milk 17. Oxygen 18. Sand in water Chemical and Physical Properties Classify each of properties listed below as physical or chemical. 1. Color 10. reactivity 2. Combustibility 11. Unreactive 3. Hardness 12. Odor 4. Density 13. stability 5. Mass 14. Malleability 6. Melting point 15. Tendency to corrode 7. Ductility 16. reacts with water 8. Volume 17. Weight 9. rusting 18. solubility Some of the measured properties of a given substance are listed below. Write the general name describing each property. Select the names from the following properties: chemical, malleability, density, volume, hardness, melting point, ductility, mass, odor, weight, combustibility dm Can easily be hammered into sheets g/cm Burns when heated in the presence of O Stinks when heated o C 25. Can easily be drawn into a wire

3 Chemical and Physical Changes (2) 1. Classify each of the following as chemical or physical changes: a. growth of a plant b. fading of dye in cloth c. melting of ice d. digestion of food e. formation of f. heating of a wood g. making a rock candy by evaporating water from sugar solution h. production of light by an electric arc i. burning of a coal j. tearing of a piece of paper k. kicking of a football l. excavating of a soli m. exploding of a firecracker 2. Which of the following involve a change in state of a substance? a. grinding beef into hamburgers b. soldering wires on a computer circuit board by melting solder c. pouring milk into a glass d. allowing soup to cool in a bowl

4 27. Classify the following materials as heterogeneous mixture, solutions, compounds, or elements. a. concrete f. gunpowder b. selenium g. brass c. baking powder h. hydrogen sulfide d. formaldehyde i. apple e. aluminum j. soft drinks 28. Classify the following properties as chemical or physical. a. heat conductivity e. length b. combustible f. brittleness c. acid resistant d. displaces hydrogen from water

5 CHAPTER 1: ANSWER SHEET (PART II) Page 18: Classification of Matter 1. homogenous matter 2. heterogeneous mixture 3. property Page 19: Mixtures 10. compound 11. element 12. homogenous mixture 4. physical property 5. chemical property 6. element 13. compound 14. homogenous mixture 15. heterogeneous mixture 7. compound 8. mixture 9. substance 16. heterogeneous mixture 17. element 18. heterogeneous mixture Page 19: Chemical and Physical Properties 1. physical property 10. chemical 2. chemical property 11. chemical 3. physical 12. physical 4. physical 13. chemical 5. physical 14. physical 6. physical 15. chemical 7. physical 16. chemical 8. physical 17. physical 9. chemical property 18. physical Page 20: Chemical and Physical Changes(2) 1a. chemical e. physical b. chemical f. chemical c. physical g. physical d. chemical h. physical 2a no b. yes c. no d. no Page 21/22: Review Matter Concepts i. chemical j. physical k. physical l. physical 19. volume 20. malleability 21. density 22. combustibility 23. odor 24. melting point 25. ductility m. chemical 27. a. heterogeneous b. element c. homogenous mixture d. compound e. element f. homogenous mixture g. homogeneous mixture h. compound 28. a. physical b. chemical c. chemical d. chemical e. physical f. physical i. heter. Mixture j. heterogeneous