Q.

By substituting chemical formulae for words in chemical equations, we can make them shorter and more useful. An equation for chemistry represents a ___________.

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a

Chemical reaction

b

Physical change

c

Physical reaction

d

Exothermic reaction

answer is B.

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Detailed Solution

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A chemical reaction is a process in which one or more substances, also called reactants, are converted to one or more different substances, known as products. Chemical reaction represents the word equation or chemical equation.

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