Chemistry Crossword

2. Biological catalysts contained in the cells of your body
3. A characteristic of a substance that describes its ability to change into other substances
5. The principle that states that matter is not created or destroyed during a chemical reaction
7. The new substances you have after the reaction is complete
8. The minimum amount of energy needed to start a chemical reaction
9. A solid that forms from a specific solution
11. Matter is not allowed to enter or leave
14. A rapid reaction between oxygen and a substance called fuel, the result of which is fire
15. A reaction is which energy is absorbed
17. Anything that has mass and takes up space
18. Burning a marshmallow
20. Squishing a marshmallow
22. A material that releases energy when it burns
24. A characteristic of a substance that can be observed without changing the substance into another substance
25. A material used to decrease the rate of a reaction

1. The process that breaks down compounds into simpler products
3. A short, easy way to show a chemical reaction, using symbols instead of words
4. The amount of a substance in a given volume
6. The substances you have at the beginning of a chemical equation
10. The number placed in front of a chemical formula in an equation
12. A reaction that releases energy in the form of heat
13. The process where two or more elements or compounds combine to make a more complex substance
16. A material that increases the rate of a reaction by lowering the activation energy
19. The study of matter and how matter changes
21. Matter can enter from or escape to the surroundings
23. The process where one element replaces another in a compound, or when two elements in different compounds trade places