Chemistry Regents Practice Test 2025 - Free Chemistry Regents Practice Questions and Study Guide

Question: 1 / 400

Which of the following is not a common type of chemical reaction?

Synthesis reaction

Decomposition reaction

Fermentation reaction

Fermentation is a specific biological process in which microorganisms like yeast or bacteria convert sugars into acids, gases, or alcohol under anaerobic conditions. Although it involves chemical changes and can produce various products, it is not classified as one of the fundamental types of chemical reactions typically taught in chemistry courses. In contrast, synthesis, decomposition, and combustion reactions are widely recognized categories.

Synthesis reactions involve combining simple substances to form a more complex product. Decomposition reactions entail breaking down a compound into simpler components. Combustion reactions involve the reaction of a substance with oxygen, producing heat and light, often resulting in the formation of carbon dioxide and water. These classifications help understand and categorize the foundational reactions encountered in chemistry, making fermentation an outlier in this context.

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Combustion reaction

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