what are three examples of a chemical change

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Examples of chemical changes areburning, cooking, rusting, and rotting. Examples of physical changes are boiling, melting, freezing, and shredding. Many physical changes are reversible, if sufficient energy is supplied.

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Signs Of Chemical Change Fireworks are examples of chemical changes. The light and heat produced are the results of chemical reactions that produce new compounds. Rust appearing on iron is an example of a chemical change. The rust is the result of iron oxide being created. Melting ice is an example of a physical change.

There are several types of chemical changes. Every chemical change involves a chemical reaction, which changes the chemical bonds of the original substance. Chemical reactions create one new chemical substance or several new substances (the products) from one or more reactants.

Meanwhile, organic chemical changes are changes that occur when organic compounds alter the structure of another chemical. Organic compounds contain hydrogen and oxygen. Examples of organic chemical changes include halogenation, methylation, crude oil cracking, and polymerization.

Chemical changes may cause a substance to change color, change temperature, produce bubbles, or (in liquids) produce a precipitate. Chemical changes can also be considered to be any phenomenon that allows a scientist to measure chemical properties.