Unit 02 Vocabulary

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Across
  1. 6. A measure of how much heat energy is needed to change the temperature of 1 gram of a substance by 1 degree Celsius.
  2. 7. A phase change when a solid substance becomes liquid
  3. 8. A particle that is made up of two or more atoms, chemically bonded
  4. 10. Impure matter, containing two or more substances physically combined
  5. 12. Energy transferred between particles during a collision, usually due to a difference in temperature
  6. 13. The average kinetic energy of a set of particles
  7. 17. A homogeneous mixture
  8. 18. A phase change when a liquid substance becomes gas
  9. 19. A phase change when a liquid substance becomes solid
  10. 21. A substance that cannot be broken down into simpler components through breaking chemical bonds
  11. 22. A phase change when a gaseous substance becomes liquid
  12. 23. A change in which the form of matter is altered but one substance is not transformed into another
  13. 26. A mixture in which the particles are distributed unevenly
  14. 27. A phase of matter that has a definite shape and a definite volume
Down
  1. 1. A phase change when a solid substance becomes gas
  2. 2. A phase of matter that has an indefinite shape and a definite volume
  3. 3. A measure of how much heat energy is needed to change 1 gram of a solid substance into 1 gram of the same substance as a liquid
  4. 4. A measure of how much heat energy is needed to change 1 gram of a liquid substance into 1 gram of the same substance as a gas
  5. 5. A phase of matter that has an indefinite shape and an indefinite volume
  6. 9. A particle that is the smallest unit of an element
  7. 11. An atom or molecule; the smallest unit of a substance not chemically bonded to anything else
  8. 14. A transformation of one substance into one or more new products via a chemical reaction
  9. 15. A mixture in which the particles are distributed evenly
  10. 16. A process in which a system releases energy
  11. 17. Pure matter, either an element or a compound
  12. 20. A process in which a system absorbs energy
  13. 24. A substance composed of two or more elements held together by a chemical bond
  14. 25. A phase change when a gaseous substance becomes solid