Across
- 2. an acid releases this into water
- 4. bitter substance with high pH
- 6. Chemical __________, causes a chemical change
- 8. sour substance with a low pH
- 9. a reaction that releases energy
Down
- 1. a base releases this into water
- 3. chemical reactions do this to atoms
- 5. starting material in a reaction
- 7. displacement reaction two kinds of atoms trade