Acids and Bases

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Across
  1. 3. Alkaline liquid or proton acceptor?
  2. 4. Tasty crystal or reaction product?
  3. 6. Color paper or pH tester?
  4. 8. Color clue or pH signal?
  5. 10. OH⁻ ion or base builder?
Down
  1. 1. Acid and base making salt?
  2. 2. Hydrogen ion or simple particle?
  3. 5. Corrosive liquid or proton donor?
  4. 7. Water base from metal?
  5. 9. Acidity scale or hydrogen measure?