ChemistryName :
Worksheet : Ch. 1 ; Obj. 14-23Date :
A. Read pp. 33-44 and answer the following questions:
1. Distinguish between intensive and extensive properties and give an example of each.
2. ______is anything which takes up space and has mass.
3. Give an example of matter not listed in the text.
4. ______is the amount of matter an object has.
5. ______are particular types of matter with uniform properties and definite composition.
6. ______properties can be observed or measured without changing the substance's composition.
7. ______properties cannot be observed or measured without changing the substance's composition.
8. For the following : write "P" to indicate a physical property and "C" to indicate a chemical property.
_____ water freezing at 0 ºC under standard atmospheric conditions
_____ the smell of a ripe strawberry
_____ sugar changing into carbon and carbon dioxide when heated
_____ sugar dissolving in warm water
_____ cherries having a red color when ripe
_____ acid rain corroding a limestone statue by changing the limestone into carbon dioxide and calcium chloride
9. Match the state of matter with its description :
_____ solida. has neither a definite volume or shape
_____ gasb. has both a definite volume and a definite shape
_____ liquidc. has a definite volume but lacks a definite shape
_____ plasmad. state of matter in which electrons are stripped away from the atoms, usually at very high temperatures
10. _____ (T/F) Vapors are the gaseous states of substances which are usually liquids or solids at room temperature.
11. _____(T/F) A physical change results in a new substance.
12. _____(T/F) A chemical change results only in a change in a physical property of a substance.
13. Give an example of a physical change not listed in the book.
14. _____(T/F) A mixture is formed by a chemical change.
15. _____(T/F) A solution is formed by a chemical change.
16. Distinguish between heterogeneous and homogenous mixtures and give an example of each (not listed in the book).
17. _____ T/F) A solution is a heterogeneous mixture.
18. A(n) ______is any part of a system with uniform composition and properties.
19. _____(T/F) A solution is made up of two phases.
20. _____ (T/F) A heterogeneous mixture is made up of two or more phases.
21. _____ (T/F) A mixture can be separated by physical means.
22. Name and describe one method for separating a mixture of two liquids.
23. Name and describe the two groups of substances.