It is a chemical change. The reddish brown spots on the knife is rust. Rust is the chemical reaction between iron and oxygen and moisture in the air. Since rust alters the chemical composition of iron, It is a chemical change.
It is a chemical change. The reddish brown spots on the knife is rust. Rust is the chemical reaction between iron and oxygen and moisture in the air. Since rust alters the chemical composition of iron, It is a chemical change
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Answer:
It is a chemical change. The reddish brown spots on the knife is rust. Rust is the chemical reaction between iron and oxygen and moisture in the air. Since rust alters the chemical composition of iron, It is a chemical change.
Explanation:
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Answer:
It is a chemical change. The reddish brown spots on the knife is rust. Rust is the chemical reaction between iron and oxygen and moisture in the air. Since rust alters the chemical composition of iron, It is a chemical change
Explanation: