Physical science crossword

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Across
  1. 2. a sample of matter
  2. 4. A change of matter from one form to another without change in chemical properties
  3. 5. the temperature and pressure at which a solid becomes a liquid
  4. 6. A substance made up of atoms of two or more different elements joined by chemical bonds
  5. 8. a sample of matter
  6. 9. th temperature at which a liquid becomes a gas
  7. 10. d=m/V
  8. 11. the ability of a substance to react in the pressence of oxygen and burn when exposed to flame
  9. 12. combination of two or more substances
  10. 15. a change that occurs when a substance changes composition by firming one or more new substances
  11. 18. Anything that has mass and occupies space
  12. 19. A substance that can not be sepperated or broken down into simpler substances by chemical
Down
  1. 1. combine with another substance
  2. 3. color and shapes
  3. 6. a combination of chemeocal symbols and numbers to represent a substance
  4. 7. the ratio of the mass of a substance to the volume of the substance
  5. 13. a powder used to make glass
  6. 14. what properties are, how they interact and change
  7. 16. The smallest unit of a substance that keeps al of the physical and chemical properties of that substance it can consist of one atom or two or more atoms bonded together
  8. 17. The smallest unit of an element that maintains the properties of that element