Across
- 1. a substance that dissolves in water to produce hydrogen ions
- 4. a substance that removes catalyst effect
- 8. basic building blocks of matter
- 10. pure substances made of only on kind of atom
- 12. anything that has mass and takes up space
- 13. the chemicals on the left side of a chemical equation
Down
- 2. substance that lowers the energy required to start a reaction
- 3. movement of molecules from higher concentration
- 5. stored chemical energy that holds atoms together
- 6. a substance that dissolves in water to produce hydroxide ions
- 7. a molecule that has a partial negative and partial positive charge
- 9. the chemicals on the right side of a chemical equation
- 11. proteins that act as catalysts