Match the following words to their descriptions.

Question

Column A
1.
the smallest unit of matter:
2.
two atoms held together by an ionic bond:
3.
two atoms held together by a covalent bond:
4.
Si
5.
NaCl
6.
CO2

a molecule
b atom
c compound

Answer 1

Here are the matches for the words in Column A to their descriptions:

1. the smallest unit of matter: b (atom)
2. two atoms held together by an ionic bond: c (compound) (NaCl is an example)
3. two atoms held together by a covalent bond: a (molecule) (CO2 is an example)
4. Si: b (atom) (it is a single element)
5. NaCl: c (compound) (it is made up of sodium and chlorine ions)
6. CO2: a (molecule) (it is a molecular compound made of carbon and oxygen)

So the complete matches are: 1 - b 2 - c 3 - a 4 - b 5 - c 6 - a