Particles Matter Review

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Across
  1. 1. move randomly and spread out
  2. 3. a change that results in at least one new substance being formed due to the breaking and forming of chemical bonds and rearrangement of atoms in a reaction
  3. 5. packed closely together but move freely over each other
  4. 6. new chemical substances that result from a chemical reaction; new chemical bonds are formed to make the products during a chemical reaction
  5. 8. chemical substances used in a chemical reaction; chemical bonds of the reactants are broken during a chemical reaction
  6. 9. pure substances made up of only one type of atom
  7. 11. a change in which no new chemical substances are formed; a physical change may be a change in shape, size or state, and many of these changes are easy to reverse
  8. 14. elements that conduct heat and electricity; shiny solids that can be made into thin wires and sheets that bend easily
  9. 16. the process of combining with oxygen, most commonly burning with a flame
Down
  1. 2. packed closely together;vibrate in fixed position
  2. 3. changing from gas to a liquid
  3. 4. a combination of substances in which each keeps its own properties
  4. 7. the condition or phase of a substance; the three main states of matter are solid, liquid and gas
  5. 10. changing from a solid to gas
  6. 12. changing from a gas to a solid
  7. 13. two or more atoms joined (bonded) covalently together
  8. 15. the central part of an atom, made up of protons and neutrons