Chemical Reactions

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Across
  1. 2. The substance that everything is made of and has mass and volume.
  2. 4. A change that can be undone and returned to its original state.
  3. 6. A chemical reaction involving burning and oxygen.
  4. 8. The smallest particle of an element that retains its properties.
  5. 10. A group of two or more atoms bonded together.
  6. 14. A chemical change where iron reacts with oxygen and water.
  7. 17. A solid formed when two solutions react together.
  8. 18. A state of matter with a fixed shape and volume.
  9. 20. A change that does not produce a new substance.
  10. 23. The process where a liquid changes into a gas.
  11. 24. A starting substance in a chemical reaction.
Down
  1. 1. The change from a liquid to a solid.
  2. 3. A change that produces one or more new substances.
  3. 5. A possible sign that a gas is being produced in a chemical reaction.
  4. 6. The process where a gas changes into a liquid.
  5. 7. A combination of substances that are not chemically joined together.
  6. 9. A substance formed when two or more elements chemically combine.
  7. 11. The change from a solid to a liquid.
  8. 12. A measure of how hot or cold something is.
  9. 13. A substance formed during a chemical reaction.
  10. 15. The process of a substance mixing evenly into a liquid.
  11. 16. A state of matter that spreads out to fill any container.
  12. 19. A pure substance made of only one type of atom.
  13. 21. A state of matter with a fixed volume but no fixed shape.
  14. 22. A smell that may indicate a chemical reaction has occurred.
  15. 23. Observations that show a chemical change has occurred.