Matter Crossword

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Across
  1. 4. a solid object that occupies space and carries electric charge.
  2. 5. a device for combining a flammable gas with controlled amounts of air before ignition
  3. 6. particles that are tight or closely packed
  4. 7. a substance (such as an element or compound) that is made by a chemical process.
  5. 8. any of the four substances air, water, fire, and earth
Down
  1. 1. a substance that is formed when chemicals bond together
  2. 2. particles that have neither a defined volume nor defined shape.
  3. 3. a minute portion of matter
  4. 6. the intellectual and practical activity encompassing the systematic study of the structure and behavior of the physical and natural world through observation and experiment.
  5. 9. a substance that flows freely but is of constant volume