Physical Science Vocabulary Contract

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Across
  1. 4. Any change that occurs without altering the chemical composition of a substance
  2. 6. (not element)is the smallest component of an element, characterized by a sharing of the chemical properties of the element and a nucleus with neutrons, protons and electrons
  3. 8. is defined as the ratio between mass and volume or mass per unit volume
  4. 11. is the temperature at which the vapor pressure of a liquid equals the external pressure surrounding the liquid
  5. 12. is made up of atoms
  6. 13. A substance that cannot be broken down into simpler substances by chemical means
Down
  1. 1. substances that are made of only one type of atom or only one type of molecule
  2. 2. is the tendency of a substance to undergo chemical reaction
  3. 3. involving the rearrangement of the atoms of one or more substances and a change in their chemical properties
  4. 5. is a substance formed when two or more chemical elements are chemically bonded together
  5. 7. is the temperature at which the solid and liquid phases of a substance are in equilibrium at a specified pressure
  6. 9. is the smallest particle in a chemical element or compound that has the chemical properties of that element or compound
  7. 10. is a material made up of two or more different substances which are mixed but are not combined chemically