Final answer:
Chemical change involves the creation of new substances with different properties from the original ones. The explosion of nitroglycerin is an example of a chemical change.
Explanation:
Chemical change is the process where one or more new substances are created, exhibiting different properties from the original materials and are not easily reversible. An example of a chemical change is the explosion of nitroglycerin, producing gases that are distinct from the original substance.
Chemical changes are often accompanied by physical changes, as the new substances have different physical properties. These changes can be identified through observations such as color change, temperature change, light emission, formation of bubbles, or precipitates.
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