Match each science fact to the correct answer

Exercise and reference answers

Matching pairs

1. Left

   Acid mix that dissolves gold

   Right

   Aqua regia

2. Left

   Black tarnish on silver

   Right

   Silver sulphide

3. Left

   pH of pure water

   Right

   7 (neutral)

4. Left

   Gas from metal + acid

   Right

   Hydrogen

5. Left

   The universal solvent

   Right

   Water