Solve these clues to fill the grid.
- Produced by the action of water
- 3 Across
- A quality of water that contains dissolved mineral salts that prevent soap from lathering
- 5 Across
- Molten rock in the earth's crust
- 9 Across
- Matter that has been deposited by some natural process
- 10 Across
- Hard piece of stone
- 11 Across
- A basic or essential attribute shared by all members of a class
- 12 Across
- Solid homogeneous inorganic substances occurring in nature having a definite chemical composition
- 14 Across
- The visual property of something that shines with reflected light
- 15 Across
- Produced under conditions involving intense heat
- 1 Down
- Attraction for iron
- 2 Down
- A ___ of hardness of solids
- 4 Down
- A crack in the earth's crust resulting from the displacement of one side with respect to the other
- 6 Down
- The breaking of a chemical bond in a molecule resulting in smaller molecules
- 7 Down
- A narrow marking of a different color or texture from the background
- 8 Down
- The remains of a plant or animal that existed in a past geological age and that has been excavated
- 13 Down
- Rock that in its molten form issues from volcanos
- 15 Down