Simple Science

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Across
  1. 2. The form of energy we hear
  2. 4. Anything that has mass and takes up space
  3. 5. A substance made from two or more elements chemical
  4. 7. Basic unit of life
  5. 10. Energy source from the sun
Down
  1. 1. Smallest particle of an element
  2. 3. Neutral subatomic particle
  3. 6. The center of an atom
  4. 8. A substance that cannot be broken down into simpler substances by chemical means
  5. 9. The force that pulls objects towards the Earth