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  • Stage 1

    Answer 4 questions correctly in a row.

Sulfur dioxide
(
S
O
2
)
is a gas released when volcanoes erupt. It can react with oxygen gas
(
O
2
)
to form sulfur trioxide
(
S
O
3
)
,
a chemical that is harmful to living things. This chemical reaction is represented by the model below.
Determine the number of each type of atom in the reactants and products.
Number of atoms in reactants
Number of atoms in products
O
S
ref_doc_title.

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