PBA Vocabulary Review

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Across
  1. 1. Tells you the number and kinds of atoms/elements in one molecule of a substance
  2. 3. the current state of a substance
  3. 4. anything that has mass and takes up space
  4. 6. Starting substances in a chemical reaction.
  5. 9. a phase of matter that has definite volume but no definite shape. Loosely bonded particles in liquid can flow over and around one another.
  6. 10. A substance made of two or more atoms/particles.
  7. 12. a physical change from one phase (solid or liquid or gas) to another without changing the substance.
  8. 14. A single particle of one element (Made of electrons, protons and neutrons.)
  9. 15. Tells you what the substance is made of
  10. 18. The small number that comes AFTER an element symbol. Tells you how many atoms/particles of that element there are.
  11. 19. The temperature at which a liquid changes to a solid.
  12. 20. Substance that cannot be broken into simpler substances by chemical or physical properties
  13. 22. Substances created in a chemical reaction
Down
  1. 2. The change of phase from gas to liquid
  2. 5. a phase of matter that has definite volume and definite shape. The particles of a solid are tightly bonded and cannot move around.
  3. 7. A scientific law stating that no matter is created or destroyed during a chemical reaction.
  4. 8. the type of energy an object has because of its motion.
  5. 11. To change phase from liquid to gas
  6. 13. The temperature at which a liquid changes to a gas.
  7. 16. a phase of matter that has no definite shape or volume. Particles of gas fly independently through space.
  8. 17. The big number that comes BEFORE a chemical formula. Tells you how many molecules of a substance there are.
  9. 21. The temperature at which a solid changes to a liquid.