Match the law or idea

Exercise and reference answers

Matching pairs

1. Left

   Conservation

   Right

   Mass is unchanged by reaction

2. Left

   Fixed proportion

   Right

   A compound has a fixed composition

3. Left

   Postulate

   Right

   Assumption accepted without proof

4. Left

   Molecule

   Right

   Neutral group of joined atoms

5. Left

   Covalent bond

   Right

   Atoms share a pair of electrons

6. Left

   Ionic bond

   Right

   One atom donates its electrons

Instructions

Match each term to what it says.

Explanation