Chemistry Crossword Puzzle

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Across
  1. 2. A gas produced during combustion and respiration.
  2. 5. The glowing gaseous part of a fire where combustion occurs.
  3. 7. A substance with a pH of 7 that is neither acidic nor basic.
  4. 10. Elements that conduct heat and electricity and are usually shiny and malleable.
  5. 14. A tool used to magnify small objects so they can be seen clearly.
  6. 15. Describing a substance that is basic with a pH greater than 7.
  7. 16. A fabric heated without oxygen that ignites easily and is used to start fires.
  8. 17. A scale used to measure how acidic or basic a substance is.
  9. 18. Substances formed as a result of a chemical reaction.
  10. 19. Compounds formed from the reaction between an acid and a base.
  11. 20. Substances that release hydroxide ions in water and have a high pH.
Down
  1. 1. The branch of science that studies substances, their properties, and how they change.
  2. 3. The careful use of senses or tools to gather information.
  3. 4. A gas required for combustion and many chemical reactions.
  4. 5. The visible result of combustion that releases heat and light.
  5. 6. Water in its gaseous state.
  6. 8. Substances that release hydrogen ions in water and have a low pH.
  7. 9. Substances that take part in a chemical reaction.
  8. 11. A chemical reaction in which a substance reacts with oxygen and releases energy.
  9. 12. Thermal energy transferred from a warmer object to a cooler one.
  10. 13. A substance that provides energy when it undergoes combustion.
  11. 17. A series of steps that lead to a specific result.