Atom, Matter, and Energy Crossword Puzzle

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Across
  1. 3. energy Energy related to the motion of particles
  2. 4. Natural resources that cannot be replaced quickly.
  3. 6. Energy that moves from warmer objects to cooler objects
  4. 7. ores Materials in rocks that contain useful metals.
  5. 12. Natural resources that can be replaced quickly by nature
  6. 15. Materials found in Earth that people use.
  7. 17. The small number written in a chemical formula that shows how many atoms are present.
  8. 19. fuels Natural fuels such as coal, oil, and natural gas.
  9. 20. The smallest unit of matter that keeps the properties of an element.
  10. 21. number The number that tells how many protons are in an atom.
  11. 22. When particles hit each other
  12. 23. The measurement of how hot or cold something is.
Down
  1. 1. When particles shake or move back and forth in place
  2. 2. The one or two letter abbreviation for an element.
  3. 5. A pure substance made of only one type of atom.
  4. 8. Matter that takes the shape of its container but keeps its volume.
  5. 9. Two or more atoms chemically bonded together
  6. 10. table A chart that organizes all known elements by their properties.
  7. 11. Matter that spreads out to fill any container.
  8. 13. mass The average mass of atoms of an element.
  9. 14. The push of particles against the walls of a container.
  10. 16. Matter that has a definite shape and volume.
  11. 18. A substance made of two or more elements chemically combined.