science-changes in matter

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Across
  1. 3. is a substance that can accept hydrogen
  2. 4. they have particles to create an element called hydrogen
  3. 6. solid, liquid and gas, it makes up everything in the universe
  4. 8. a chemical reaction where the substances release energy as heat
  5. 9. a process in which one or more chemicals react
  6. 10. a chemical reaction that produces heat and light
Down
  1. 1. a process in which one or more chemicals react
  2. 2. is any substance that is consumed up in a reaction
  3. 5. a compound formed from multiple chemicals
  4. 7. a chemical reaction that takes in energy from surroundings