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Aitchison College | Grade: Grade 6 | Science | Topic:Reversible and irreversible changes

Quiz

In a chemical reaction, substances called reactants are transformed into new substances called products. Imagine you are observing the rusting of iron. When iron reacts with oxygen in the air, it forms rust (iron oxide).
What are the reactants and products in this chemical reaction, and why does this reaction occur?

The reactants are rust and oxygen, and the product is iron; the reaction occurs because iron gets stronger when exposed to air.

The reactants are iron and oxygen, and the product is rust (iron oxide); the reaction occurs because iron reacts with oxygen to form a new substance.

The reactants are iron and rust, and the product is oxygen; the reaction occurs because oxygen is released from rust.

The reactants are oxygen and water, and the product is iron; the reaction occurs because water helps iron form rust.

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Aitchison College | Grade: Grade 6 | Science | Topic:Reversible and irreversible changes

Quiz

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