Atomic foundations bingo

Exercise and reference answers

Clues and terms

1. Clue

   Proposed the Law of Conservation of Mass in 1789.

   Item

   Lavoisier

2. Clue

   Set out the atomic theory as a list of postulates.

   Item

   Dalton

3. Clue

   Assumption accepted as true without formal proof.

   Item

   Postulate

4. Clue

   Neutral group of atoms able to exist on its own.

   Item

   Molecule

5. Clue

   Bond made by two atoms sharing electrons.

   Item

   Covalent

6. Clue

   Bond made when one atom donates its electrons.

   Item

   Ionic

7. Clue

   Two shared pairs, as in an oxygen molecule.

   Item

   Double bond

8. Clue

   Mass ratio of hydrogen to oxygen in water.

   Item

   1 to 8

9. Clue

   Naming prefix that stands for four atoms.

   Item

   Tetra

Instructions

Read each clue and tap the term it describes.

Explanation