The formation of two new compounds from two original compounds is called

The formation of two new compounds from two original compounds is called

• A. Single-Replacement
• B. Synthesis
• C. Double-Replacement
• D. Decomposition

Answer: (C)

Two compounds exchanging partners to form two new compounds is a double-displacement (metathesis) reaction. In this type, the ions switch partners, so AB + CD → AD + CB. The key idea is that two starting substances produce two different new substances, rather than a single product or a breakdown into simpler pieces. This differs from synthesis, where combining materials yields one product; decomposition, where one substance breaks into multiple products; and single-replacement, where one element replaces another in a compound to form a new compound plus a free element. A classic example is a salt solution reaction where NaCl and AgNO3 form NaNO3 and AgCl.

Two compounds exchanging partners to form two new compounds is a double-displacement (metathesis) reaction. In this type, the ions switch partners, so AB + CD → AD + CB. The key idea is that two starting substances produce two different new substances, rather than a single product or a breakdown into simpler pieces. This differs from synthesis, where combining materials yields one product; decomposition, where one substance breaks into multiple products; and single-replacement, where one element replaces another in a compound to form a new compound plus a free element. A classic example is a salt solution reaction where NaCl and AgNO3 form NaNO3 and AgCl.