SMALL NATURE OF MATTER

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