Solve these clues to fill the grid.
- Bottom part something stands on; a safe spot in baseball
- 4 Across
- A device that produces electricity
- 5 Across
- Any of various substances of either mineral origin or plant or animal origin
- 7 Across
- Any process determined by the atomic and molecular composition and structure of the substances
- 11 Across
- A substance consisting of two or more substances mixed together
- 12 Across
- State of matter that flows like water
- 13 Across
- The act of conducting a controlled test or investigation
- 14 Across
- Two or more atoms bound together as a single unit and forming part of a molecule
- 15 Across
- An abundant nonmetallic tetravalent element occurring in three allotropic forms: amorphous ___
- 1 Down
- Energy that makes things warm
- 2 Down
- A compound of an oxide with water
- 3 Down
- A segment of DNA that is involved in producing a polypeptide chain
- 6 Down
- The process of becoming a vapor
- 8 Down
- The mechanical ___ that a body has by virtue of its motion
- 9 Down
- A substance that initiates or accelerates a chemical reaction without itself being affected
- 10 Down
- The basic unit of length adopted under the Systeme International d'Unites
- 12 Down