Physical and Chemical Changes, Chemical Reactions and Phase Changes

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Across
  1. 2. properties of substances that can be observed without changing the identity of a substance are known as ___properties
  2. 5. a reaction that absorbs energy
  3. 6. a reaction that releases energy
  4. 8. phase change from a liquid to a solid
  5. 13. substances that exist before a chemical reaction
  6. 16. phase change from a gas to a liquid
  7. 18. what the reactants turn into
  8. 19. state of matter with a definite volume but no definite shape
  9. 20. a change in which the identity of the substance does NOT change
Down
  1. 1. name given to a new solid produced in a chemical reaction
  2. 3. energy that is transferred from a warmer thing to cooler things
  3. 4. phase change from a solid to a liquid
  4. 7. an energy ___ is a sign of a chemical reaction; light is produced or a temperature change occurs
  5. 9. chemical ___ are ways to represent chemical reactions
  6. 10. state of matter with no definite shape or volume
  7. 11. anything that has mass and takes up space
  8. 12. a change in which the identity of the substance DOES change
  9. 14. bubbling is a sign that a ___ is being produced during a chemical reaction
  10. 15. properties of substances that can only be observed by changing the identity of a substance are known as ___ properties
  11. 17. state of matter with definite shape and volume