Crossword !

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Across
  1. 2. Change/ Occur when a substance combines with another to form a new substance.
  2. 4. A measure of the acidity or alkalinity of a solution.
  3. 7. The process by which a gas, liquid, or solid is dispersed homogeneously in a gas, liquid, or solid without chemical change.
  4. 9. Noting or pertaining to a chemical change that is accompanied by a liberation of heat
  5. 12. Any substance that undergoes a chemical change in a given reaction.
  6. 14. The molecular force of attraction in the area of contact between unlike bodies that acts to hold them together.
Down
  1. 1. Any of various proteins, as pepsin, originating from living cells and capable of producing certain chemical changes in organic substances by catalytic action, as in digestion.
  2. 3. Composed of different substances or the same substance in different phases, as solid ice and liquid water.
  3. 5. ion/ Negatively charged molecule made up of one oxygen bonded to one hydrogen
  4. 6. Energy/ The least amount of energy required to activate atoms or molecules to a state in which they can undergo a chemical reaction.
  5. 8. The molecular force between particles within a body or substance that acts to unite them
  6. 10. A substance that dissolves another to form a solution
  7. 11. Something that has a pH value of less than 7
  8. 13. ion/ The nucleus of a hydrogen atom separated from its accompanying electron.