Across
- 3. Any substance that undergoes a chemical change in a given reaction.
- 5. 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.
- 8. The molecular force of attraction in the area of contact between unlike bodies that acts to hold them together.
- 10. Noting or pertaining to a chemical change that is accompanied by a liberation of heat
- 12. Occur when a substance combines with another to form a new substance.
- 14. The nucleus of a hydrogen atom separated from its accompanying electron.
- 15. A measure of the acidity or alkalinity of a solution.
Down
- 1. The molecular force between particles within a body or substance that acts to unite them
- 2. A substance that dissolves another to form a solution
- 4. The least amount of energy required to activate atoms or molecules to a state in which they can undergo a chemical reaction.
- 6. The process by which a gas, liquid, or solid is dispersed homogeneously in a gas, liquid, or solid without chemical change.
- 7. Negatively charged molecule made up of one oxygen bonded to one hydrogen
- 9. A type of chemical bond in which a hydrogen atom that has a covalent link with one of the electronegative atoms (F, N, O) forms an electrostatic link with another electronegative atom in the same or another molecule.
- 11. Composed of different substances or the same substance in different phases, as solid ice and liquid water.
- 13. Something that has a pH value of less than 7