Across
- 1. A substance with a high quantity of H+ ions that tastes sour, reacts with metals and carbonates, turns blue litmus paper red
- 4. A chemical change in which a substance combines with oxygen, as when iron oxidizes forming rust
- 7. The process in which substances undergo chemical changes that result in the formation of new substances
- 8. The measurement of how acidic or basic a substance is on a scale of 0 (very acidic) to 14 (very basic)
- 9. A reaction that releases energy in the form of heat (ex. Burning)
- 10. A substance with a high quantity of OH- ions that tastes bitter, feels slippery, and turns red litmus paper blue
- 12. A chemical reaction that breaks down compounds into simpler products
- 13. A substance that enters into a chemical reaction
- 14. A system in which not matter is allowed to enter or leave
- 15. A solid that forms from a solution during a chemical reaction
- 17. The minimum amount of energy needed to get a chemical reaction started
- 18. The principle stating that matter is not created or destroyed during a chemical reaction
Down
- 2. The study of the properties of matter and how matter changes
- 3. A substance formed as a result of a chemical reaction
- 5. A material that decreased the rate of a reaction
- 6. A reaction that absorbs energy in the form of heat (ex. Baking soda and vinegar)
- 11. A reaction in which one element replaces another in a compound or when two elements in different compounds trade places
- 16. A system in which mater can enter from or escape to the surroundings
- 18. A material that increases the rate of a reaction by lowering the activation energy
- 19. A biological catalyst that lowers the activation energy of reactions in cells
- 20. A chemical reaction in which two or more simple substances combine to form a new, more complex substance