Matter definitions

2. the force of attraction between molecules of the same substance, causing them to stick together
4. a substance that cant be broken up into separate substances by other chemicals
5. a characteristic of a substance that can be observed or measured without changing the substance's chemical identity
8. a measure of how much "stuff" is in something
9. happens when one chemical substance is transformed into one or more different substances
12. A substance that speeds up a chemical reaction
13. The substances which participate in a chemical reaction
15. Taking place or being formed by absorbing heat
17. The amount of space the object takes up
18. a chemical reaction that releases energy, usually in the form of heat, into its surroundings
19. the science that studies the makeup of matter and how it changes.
21. a blend of two or more substances where each substance keeps its own individual properties

1. a change in the form or appearance of a substance, without changing its chemical composition
3. Species formed from a chemical reaction
6. A rearrangement of the atoms or molecules of two or more substances that come into contact with each other, resulting in the formation of one or more new substances
7. the capacity to do work or cause change
8. A group of two or more atoms bonded together
10. a characteristic of a particular substance that can be observed in a chemical reaction
11. the form of energy that is transferred between two substances at different temperatures.
14. An attraction between atom
16. The smallest part of a substance that cannot be broken down chemically
20. Anything that takes up space