Science crossword

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Across
  1. 2. - Resulting substances after a chemical reaction
  2. 5. - Process in plants convert carbon dioxide and water into glucose and oxygen using sunlight as energy.
  3. 6. - the process of rapid chemical reaction between a fuel and oxygen
  4. 7. - Easily ignited substance
  5. 9. - Alteration in the form or state of matter without changing its chemical composition; no new substances are formed.
  6. 11. - Contains oxygen for combustion
  7. 12. - Essential gas for combustion
  8. 13. - Measure of the intensity of heat
  9. 16. - Released during combustion
  10. 18. - Visible manifestation of combustion
Down
  1. 1. - Product of cellular respiration
  2. 3. - Process where chemical substances transform into new substances through the breaking and forming of chemical bonds.
  3. 4. - Gaseous phase of a substance
  4. 6. - Transformation in which substances undergo chemical reactions, resulting in the formation of new substances with different properties.
  5. 8. - Visible, rapid combustion
  6. 9. - Resulting substances after a chemical reaction
  7. 10. - Source of energy for use and storage at a cellular level
  8. 14. - Initial substances in a chemical reaction
  9. 15. - Substance consisting of only one type of atom.
  10. 17. - Initiates combustion