Across
- 3. An instrument used to measure temperature accurately during experiments.
- 5. The condition of a substance containing only one type of particle.
- 6. The process where a solid mixes evenly with a liquid and appears to disappear.
- 7. The temperature at which a liquid changes into a solid.
- 10. A common impurity that lowers melting point and raises boiling point when dissolved in water.
- 11. Unwanted substances mixed with a pure substance.
- 12. A purple chemical used in experiments to show how particles spread through water.
- 14. The process of reducing the concentration of a substance by adding more solvent, such as water.
Down
- 1. The temperature at which a liquid changes into a gas.
- 2. The fixed temperature at which a solid changes into a liquid.
- 4. The spreading of particles from a region of high concentration to low concentration without stirring.
- 5. Extremely tiny pieces that make up all matter and are always in motion.
- 8. A scientific explanation that describes matter as being made up of tiny moving particles.
- 9. Solid water that melts at a specific temperature under normal conditions.
- 13. A flat part of a temperature–time graph showing constant temperature during melting or boiling.