Crossword !

2. ion / Negatively charged molecule made up of one oxygen bonded to one hydrogen
4. Energy / The least amount of energy required to activate atoms or molecules to a state in which they can undergo a chemical reaction.
7. / A measure of the acidity or alkalinity of a solution.
8. / Noting or pertaining to a chemical change that is accompanied by a liberation of heat
10. / The molecular force of attraction in the area of contact between unlike bodies that acts to hold them together.
12. / The process by which a gas, liquid, or solid is dispersed homogeneously in a gas, liquid, or solid without chemical change.
13. / A substance that dissolves another to form a solution

1. / Something that has a pH value of less than 7
2. / Composed of different substances or the same substance in different phases, as solid ice and liquid water.
3. / Any substance that undergoes a chemical change in a given reaction.
5. Change / Occur when a substance combines with another to form a new substance.
6. / The molecular force between particles within a body or substance that acts to unite them
9. / 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.
11. ion / The nucleus of a hydrogen atom separated from its accompanying electron.