Jasleen: Particle Theory of Matter Crossword

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Across
  1. 3. Anything that takes up space and can be weighed.
  2. 5. Energy that comes from a source and travels through space at the speed of light.
  3. 8. One of the very small parts of matter (as a molecule, atom, or electron).
  4. 9. An action or process of solving a problem.
  5. 10. A way in which heat travels.
Down
  1. 1. Substances that are made up only one kind of particle and have a fixed or constant structure.
  2. 2. When heat moves from one object to another through direct touch.
  3. 3. The point at which materials change from a solid to a liquid.
  4. 4. An idea or boilingpoint The temperature at which any liquid starts to boil.
  5. 6. set of ideas that are intended to explain facts or events.
  6. 7. The temperature at which any liquid starts to boil.