year 9 chemical reactions

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Across
  1. 4. The basic unit of a chemical element
  2. 5. Substance produced at the end of a chemical reaction
  3. 7. Process by which plants convert sunlight into chemical energy
  4. 9. Process involving the breaking and forming of bonds to create new substances
  5. 10. Reaction between an acid and a base to form water and salt
  6. 12. Simple sugar that is an important energy source in organisms
  7. 14. Substance with a sour taste and a pH less than 7
  8. 15. Substance with a bitter taste and slippery feel with a pH greater than 7
  9. 16. Chemical reaction that typically involves burning and releases energy
Down
  1. 1. Substance that starts a chemical reaction
  2. 2. Representation of a chemical reaction using symbols and formulas
  3. 3. Law stating that matter cannot be created or destroyed in a chemical reaction
  4. 5. Scale that measures the acidity or alkalinity of a solution
  5. 6. Group of atoms bonded together
  6. 8. Substance that changes color to show the presence of an acid or base
  7. 11. Cellular process that converts food into energy
  8. 13. of Conservation of Mass States that mass remains constant during a chemical reaction