Question

6
identify the reaction type: * (0.5 points)
al + o₂ ->
singlereplacement
decomposition
doublereplacement
combustion
synthesis

Explanation:

To identify the reaction type, we analyze the given reaction \( \text{Al} + \text{O}_2
ightarrow \). A synthesis reaction is defined as a reaction where two or more reactants combine to form a single product. Here, aluminum (Al) and oxygen (\( \text{O}_2 \)) are combining to form a compound (aluminum oxide, though the product isn't fully written here, the reactants are combining). Single replacement involves one element replacing another in a compound, decomposition is breaking a compound into simpler substances, double replacement involves two compounds exchanging ions, and combustion typically involves a fuel reacting with oxygen to produce carbon dioxide and water (or similar, but here the reactants are a metal and oxygen, not a hydrocarbon - like fuel). So this is a synthesis reaction as two substances are combining.

Answer:

Synthesis (the option labeled "Synthesis")