1. Matter and Energy Chapter 1 & 2 vocabulary Chemistry

2. matter Anything that has mass and volume.

3. weight The force of gravity on an object

4. volume The amount of space that matter in an object occupies V=lwh

5. atom The smallest particle of an element that has the chemical properties of that element

6. molecule When two or more atoms bond together or combine

7. element Substance that contains only a single type of atom

8. compound Substance that consists of two or more different types of atoms bonded together

9. mixture A combination of two or more substances that do not combine chemically and remain the same substances

10. Heterogeneous mixture mixture that consists of visibly different substances

11. Homogeneous mixture Mixture that has the same uniform appearance and composition throughout

12. States of matter Different forms in which matter can exist

13. solid State of matter that has a definite shape and definite volume

14. liquid State of matter that has a definite volume but not a definite shape

15. gas State of matter that does not have a definite shape or volume

16. Physical change Change in a substance that does not change the substance into a different one

17. Chemical change Change of one substance into another substance

18. melting Process where a solid becomes a liquid

19. freezing Process where a liquid becomes a solid

20. evaporation Process which a liquid becomes a gas

21. sublimation Process which a solid changes directly to a gas

22. boiling Process which a liquid becomes a gas

23. condensation Process which a gas becomes a liquid