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(11 points)
Select the correct options in brackets and use the word list below to fill in the blanks.
Carbon has [one / more than one] type of subunit. Its subunit is a(n) . Therefore carbon is a(n) .
Oxygen has [one / more than one] type of subunit. Its subunit is a(n) that is made up of [one / more than one] type of atom. Therefore oxygen is a(n) .
Carbon dioxide has [one / more than one] type of subunit. Its subunit is a(n) that is made up of [one / more than one] type of atom. Therefore carbon dioxide is a(n) .
atom • compound • element • element • molecule • molecule
(4 points)
Next to each substance below, write the letter of the corresponding diagram.

Carbon Oxygen Carbon dioxide Mixture of carbon and oxygen
