1. Bell Ringer 9-4-09 What is the force that holds atoms together called?
When two or more substances are mixed together but NOT CHEMICALLY COMBINED!!
When two or more substances are mixed together and are CHEMICALLY COMBINED!
The symbols that represent compounds is called the ____________.
Mass divided by volume = ___________

2. Chapter 2 Vocabulary Review

3. A change in a substance that forms a new substance

4. The type of mixture where the different parts can be seen

5. A measure of the force of gravity on an object

6. The amount of space that matter takes up

7. A change where energy is absorbed (taken IN)

8. A measure of the amount of matter in an object

9. When two or more substances are mixed together but not chemically combined

10. A change in a substance’s form or appearance that does not form a new substance

11. The force that holds atoms together (attraction)

12. The type of mixture in which the parts are evenly mixed and you cannot see the different parts

13. Matter cannot be created or destroyed

14. A combination of symbols that represent the elements in a compound and their ratios

15. Anything that has mass and takes up space

16. System of units scientists use worldwide to measure the properties of matter

17. Mass divided by volume

18. The smallest piece of matter

19. A change where energy is given off (exits)

20. When two or more substances are mixed together and are chemically combined

21. Work on Chapter 2 Review p. 65-66 #1-21 (omit 15, 18)
After quiz…
Work on Chapter 2 Review p #1-21 (omit 15, 18)