Chemistry

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Across
  1. 1. The __ scale measures the acidity or basicity of a substance.
  2. 3. A chemical substance that has sour taste, turns blue litmus paper red and has a pH of less than 7.
  3. 4. A chemical substance that is slippery, taste astringent and have a pH of more than 7.
  4. 5. A chemical element in it's smallest possible form, made up of neutrons protons and electrons.
  5. 6. A substance formed when two or more chemical elements bond together.
  6. 7. Negatively charged ion.
Down
  1. 1. The element associated with K and the atomic number of 19.
  2. 2. The change of one or more substance into another substance is a chemical ______
  3. 3. The metals in group 2 on the periodic table are ______ earth metals.
  4. 6. Positively Charged ion.