Science

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Across
  1. 2. The ability to do work or make reactions happen.
  2. 4. To separate into constituent parts or elements or into simpler compound decomposes water by electrolysis decompose.
  3. 9. A group of atoms (2 or more) that are chemically bonded together.
  4. 10. A table of the chemical elements arranged in order of atomic number.
  5. 11. The smallest particle of a chemical element that can exist.
  6. 12. A type of subatomic particle with a positive charge.
Down
  1. 1. Any substance that cannot be decomposed into simpler substances by ordinary chemical processes.
  2. 3. A material made up of two or more different chemical substances which are not chemically combined.
  3. 5. Any atom or group of atoms that bears one or more positive or negative electrical charge.
  4. 6. The mass of an atom.
  5. 7. Hydrocarbon reacts with Oxygen to form Carbon Dioxide and Water.
  6. 8. A type of subatomic particle with no charge.