Across
- 1. A characteristic of a physical change is that it is usually ________.
- 7. The smallest unit of an element that retains its properties.
- 8. The process where a gas turns back into a liquid.
- 9. The state of matter where particles are tightly packed and have a fixed shape.
Down
- 2. The process where a liquid turns into a gas at a temperature below boiling.
- 3. A type of mixture where the substances are evenly distributed and cannot be easily separated.
- 4. A type of change where a new substance is formed with different properties.
- 5. A substance made of two or more elements chemically bonded together.
- 6. The process of a liquid turning into a solid.
- 9. The change from a solid directly to a gas, skipping the liquid phase.