Chemistry

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Across
  1. 4. allows an inspector to determine only whether a solution is acidic or basic
  2. 5. substances that change colour when they are added to acidic or alkaline solutions
  3. 7. consisting of a protonated water molecule and present in all aqueous acids.
Down
  1. 1. a measure of how acidic/basic water is
  2. 2. It consists of hydrogen and an oxygen atom which are held together by a covalent bond
  3. 3. a substance that can accept hydrogen ions in water and can neutralize an acid
  4. 6. A chemical that gives off hydrogen ions in water and forms salts by combining with certain metals