Lesson 1.4 Changes in Matter

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Across
  1. 3. this type of energy is the total energy of the motion of all particles in an object
  2. 4. one of three states of matter, water vapor is an example
  3. 8. the Law of Conservation of Mass is also called the Law of Conservation of ____
  4. 9. one of three states of matter, ice is an example
  5. 13. this solution, formed with oxygen and hydrogen atoms, is more often called hydrogen ____, something you may pour on a cut to clean it
  6. 14. two different size coffee cups can have the same temperature but the larger cup would have more thermal energy because of the larger ___ of the cup (and the substance in it)
  7. 15. a measure of how hot or cold something is, the average measure of the motion of particles in a system
  8. 17. thermal energy flows from ___ matter to colder matter
  9. 18. in two water molecules, there are this many oxygen atoms
  10. 19. this type of chemical change occurs when there is a rapid combination of a fuel with oxygen; it produces heat, light, and new substances
  11. 21. this type of chemical change uses electricity to break a compound into elements or simpler compounds
  12. 23. methane is a molecule that is made with four atoms of hydrogen and one atom of this other element, abbreviated with a “C” on the Periodic Table of Elements
  13. 25. the digestion of food coverts chemical energy into ___ thermal energy, which helps keep your body temperature stable
  14. 27. in a water molecule there are this many oxygen atoms
Down
  1. 1. this type of change alters the form or appearance of matter but does not turn any substance in the matter into a different substance
  2. 2. this type of chemical change is a slow combination of a bright metal with sulfur or another substance, producing a dark coating on the metal
  3. 5. a physical change is a change that can alter the ___ or the form of matter
  4. 6. this type of change that produces one or more new substances
  5. 7. this type of change occurs when energy is released by a system
  6. 10. in two water molecules, there are this many hydrogen atoms
  7. 11. this color, the color of the Statue of Liberty in New York, occurs when bronze is exposed to the atmosphere for long periods of time
  8. 12. one of three states of matter, water (like the water you would drink from a glass) is an example
  9. 16. this type of change occurs when energy is absorbed by a system
  10. 18. in a water molecule there are this many hydrogen atoms
  11. 20. this type of energy measures the energy stored in chemical bonds between atoms
  12. 22. the Law of Conservation of Mass says that the number of atoms before and after a chemical change occurs must be ____
  13. 24. this type of chemical change occurs when there is a combination of a substance with oxygen
  14. 26. chemical and physical changes in matter include a change in ____