Across
- 2. chemical that changes color with pH
- 6. a substance with pH less than 7
- 7. the lightest element, common in acids
- 9. substance that speeds up a reaction without being used
- 11. amount of substance in a solution
- 15. negatively charged particle in atoms
- 17. paper that turns red in acid and blue in base
- 18. having pH equal to 7
- 19. major component of air
Down
- 1. area that can affect reaction speed
- 3. affects how quickly reactions proceed
- 4. a scale that measures acidity or alkalinity
- 5. element that is shiny and conducts electricity
- 8. how fast a chemical reaction occurs
- 9. element central to organic life
- 10. product of an acid and a base
- 12. element needed for combustion and respiration
- 13. process where substances change into new ones
- 14. common metal in table salt
- 16. a substance that accepts protons or feels slippery