HW 9-9-08 - . 9. a) define physical property....

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Joseph Leonard 9/9/08 Green P26 #5-11 5. a) What is mass? The measurement of the amount of substance something has. b) What is weight? The gravitational pull on an object 6. How does the composition of a pure compound differ from that of a mixture? Every sample of a given pure substance has exactly the same characteristic properties. Every sample of a given pure substance has exactly the same the same composition. 7. a) Define property . A characteristic used to distinguish between substances and to separate them. b) How are properties useful in classifying materials? Comparisons of several properties can be used to establish the identity of an unknown. 8. What is the difference between extensive properties and intensive properties? Extensive properties depend on the amount of matter that is present. Intensive properties do not depend on the amount of matter present.
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Unformatted text preview: . 9. a) define physical property. Characteristic that can be observed for measured without changing the identity of the substance. b) List two examples of physical properties. Melting point and boiling point 10. a) Define chemical property . Relates to a substances ability to undergo changes that transform it into different substances. b) List two examples of chemical properties. Ability of iron to rust when combined with oxygen in the air Ability of silver to tarnish by combining with sulfur 11. Distinguish between a physical change and a chemical change. In a chemical change, a substances changes into a different substance A physical change is a change in a substance that does not involve a change in the identity of a substance....
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