Chemical Reactions Version 2

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Across
  1. 3. Water molecules are made of oxygen and ______.
  2. 6. This highly reactive substance is commonly found in bananas.
  3. 8. The second most common gas in the air around us is ___________.
  4. 10. the ability to burn
  5. 12. Lemonade is an example of a _______ because it has multiple ingredients.
  6. 14. The process of a gas changing into a liquid.
  7. 15. This common gas makes up about 78% of the air around us.
  8. 18. The state of matter in which particles have the least energy.
  9. 19. The amount of space an object takes up
  10. 23. the temperature at which a liquid becomes a solid
  11. 25. Multiple atoms bonded together form a _______.
  12. 26. the process of a liquid changing into a gas
  13. 27. The state of matter in which particles can slip and slide past each other.
  14. 28. A single ingredient made of the same type of matter throughout.
Down
  1. 1. The temperature at which a liquid becomes a gas.
  2. 2. To identify an unknown substance, we should examine its _______.
  3. 4. Reactivity and flammability are examples of ________ properties.
  4. 5. The ability of a substance to chemically combine with other substances.
  5. 7. Sand is ________ in water because it does not dissolve.
  6. 9. This substance does not naturally exist as a liquid. It changes directly from a solid to a gas.
  7. 11. This key bath bomb ingredient reacts with citric acid
  8. 12. Solids, liquids, and gases are all states of ______.
  9. 13. This state of matter is less dense than the others.
  10. 16. when a substance breaks up into tiny pieces and mixes completely with a liquid
  11. 17. The amount of mass in a given amount of space. How much stuff is packed into a certain space.
  12. 20. This gas is very dense and highly flammable
  13. 21. This gas is not flammable and has a low density.
  14. 22. The smallest possible piece of matter.
  15. 24. We can use our five senses to observe ______ properties.