Across
- 3. term that means potential for hydrogen
- 4. polymer that is hard to break and can be recycled
- 8. a base that neutralizes the acid upsetting your stomach
- 9. when heat energy is absorbed in a chemical reaction
- 11. substances you start with in a chemical reaction
- 12. reaction when two or more substances interact to form new molecules
Down
- 1. substance that speeds up a chemical reaction
- 2. reaction that doesn't change the molecules, but can change appearance or state
- 5. solids with a regular, repeating arrangement of atoms
- 6. molecules arranged in long chains of repeating small molecules
- 7. valuable crystals used to make jewelry
- 8. substance that donates hydrogen ions, tastes sour and conducts electricity
- 9. when heat energy is released in a chemical reaction
- 10. chemical opposite of an acid