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Which of the following best completes the general definition of a combination reaction?

Question
Which of the following best completes the general definition of a combination reaction?
A single reactant breaks down into two or more simpler products
Two or more substances combine to form a single product
An element displaces another element from its compound
Two compounds exchange ions to form two new compounds
Answer
Two or more substances combine to form a single product
Detailed Explanation
A combination reaction is defined as one where two or more substances (elements or compounds) combine to form a single new product.
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