Solve these clues to fill the grid.
- State of matter that flows like water
- 3 Across
- The withdrawal of heat to change something from a liquid to a solid
- 5 Across
- State of matter that fills any space, like air
- 7 Across
- The application of heat to change something from a liquid to a gas
- 10 Across
- A piece of photographic film showing an image with light and shade or colors reversed
- 11 Across
- A change directly from the solid to the gaseous state without becoming liquid
- 12 Across
- The temperature below which a liquid turns into a solid
- 13 Across
- Hopeful and optimistic; the opposite of negative
- 14 Across
- That which has mass and occupies space
- 15 Across
- The process of changing from a gaseous to a liquid or solid state
- 1 Down
- One who does not side with any party in a war or dispute
- 2 Down
- English chemist and physicist who formulated atomic theory and the law of partial pressures
- 4 Down
- An elementary particle with negative charge (plural)
- 6 Down
- State of matter with a fixed shape
- 8 Down
- The process whereby heat changes something from a solid to a liquid
- 9 Down
- A stable particle with positive charge equal to the negative charge of an electron (plural)
- 14 Down