Grade 4 - Physical and Chemical Change

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Across
  1. 3. A safety device used to put out fires.
  2. 4. A method to separate different colors or substances in a mixture.
  3. 8. A change that cannot go back to the original form.
  4. 9. When a solid changes into a liquid because it gets warm.
  5. 10. Using filter paper to separate solid pieces from a liquid.
  6. 11. A tool with many small holes used to separate bigger and smaller pieces.
  7. 12. An object that can attract some metals, like iron and steel.
  8. 13. A clear, even mixture of a solute and a solvent.
  9. 14. The force that pulls some metals, like iron, towards a magnet.
  10. 17. Able to dissolve in a liquid.
  11. 18. The liquid that dissolves another substance.
Down
  1. 1. Separating different things by picking them out with your fingers.
  2. 2. A chemical change that uses fuel and oxygen and gives off heat and light.
  3. 5. A change that can go back to the way it was before.
  4. 6. When a liquid changes into a solid because it gets cold.
  5. 7. The three things needed for a fire: heat, fuel, and oxygen.
  6. 11. The substance that is being dissolved in a liquid.
  7. 15. Not able to dissolve in a liquid.
  8. 16. Separating big pieces from small pieces using a tool with small holes.