Question

What is Chemical change?? EXPLANATION NEED CLEARANCE!!

Answer 1

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Chemical changes occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances. ... An example of a chemical change is the reaction between sodium and water to produce sodium hydroxide and hydrogen.

Answer 2

Chemical changes occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances. ... An example of a chemical change is the reaction between sodium and water to produce sodium hydroxide and hydrogen.

When something undergoes a "chemical reaction" and a new substance is formed as a result, we call this chemical change. In some in.stances, simply applying heat can cause a chemical change. Cooking pancakes, for in.stance, is an example of a chemical change; the pancake batter "changes" from a liquid to a solid. Rust forming on metal is another example of a chemical change. The iron reacts with water and oxygen to create a new substance — rust.

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