what is chemical change
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➣Chemical changes are also known as chemical reactions.
➣The “ingredients” of a reaction are called the reactants, and the end results are called the products.
➣ The change from reactants to products is signified by an arrow:
➥Reactants → Products
➣The formation of gas bubbles is often the result of a chemical change (except in the case of boiling, which is a physical change).
➣A chemical change might also result in the formation of a precipitate, such as the appearance of a cloudy material when dissolved substances are mixed
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a change in wich a new substance is formed like burning of paper becomes ash
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