Chemistry

2. " A solid that form's from solution during a chemical reaction."
4. The cells in your body contain biological catalysts called ENZYMES."
6. "is a amount of a substance in a given volume."
8. "When on element replaces another in a compound, or when two elements in different compounds trade places."
10. reaction- "is a reaction in which energy is absorbed
13. "The study of matter and how matter changes"
14. "A material used to decrease the rate of a reaction"
16. "In contrast to a synthesis reaction, a process called DECOMPOSITION breaks down compounds into simpler products."
17. is a material that releases energy when it burns."
19. The substance you have at the beginning"
21. "when two or more elements or compounds combine to make more complex substances the process is called synthesis."
23. equation-"is a short, easy way to show a chemical reaction, using symbols instead of words."
25. reaction-"A reaction that releases energy in the form of heat"
26. " a rapid reaction between oxygen and a substance called a fuel.

1. "is a number placed in font of chemical formula in an equation."
3. property- a Characteristic of substance that describes its ability to change into other substances.
5. "is anything that has mass and takes up space."
7. system- " matter is not allowed to enter or leave."
9. of mass- "during a chemical reaction, matter is not created or destroyed
11. a material that increases the rate of reaction by lowering the activation energy."
12. reaction- A change in matter that produces one or more new substances.
15. "When the reaction is complete, you have new substances"
18. system- "matter can enter from or escape to the surrounding."
20. change- " is any change that alters the form or appearance of a substance but that does not make the substance into another substance.
22. property- A characteristic of a substance that can be observed without changing the substance into another substance.
24. energy- "is a minimum amount of energy needed to start a chemical reaction."