kishag6 kishag6

12-02-2021
Chemistry

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Iron garden tools were left outside over the winter. When found, They appeared dirty with spots of reddish-brown, flaky substance. Was this a physical or chemical change? How do you know?

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gibsonj17 gibsonj17

12-02-2021

Answer:

Chemical change

Explanation:

The reddish-brown substance is rust. Rust is a chemical change because rust is a different kind of matter than the iron, oxygen, and water present before the rust formed. The explosion of nitroglycerin is a chemical change because the gases produced are very different kinds of matter from the original substance.

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