Chemical Reactions 2of2
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What is a synthesis reaction?
- A + B -> AB
- A chemical reaction that joins smaller atoms, ions, or molecules in a larger ones.
- Synthesis: To put together.
- All of the synthesis reactions that occur in the body are collectively referred to as anabolism.
- Anabolic reactions are usually endergonic.
What is a decomposition reaction?
- AB -> A, B
- A chemical reaction that breaks down larger molecules into smaller molecules, ions, and atoms
- All of the decomposition reactions that occur in the body are collectively referred to as catabolism.
- Decomposition reactions are usually exergonic.
What are exchange reactions? (replacement reactions)
- AB, CD -> AD, CB
- Multiple molecules breakdown and parts of each or switched to create multiple new molecules. Groups exchanging members.
- Exchange reactions are a combination of decomposition and synthesis reactions.
What are reversible reactions?
- AB <--> A, B
- Chemical reactions that can be reversed.
- You are able to turn the products back into the reactants.
- Special conditions are required for some reversible reactions, such as water added or heat applied.
- Enzymes (catalysts) are often needed to guide reversible reactions.
What does oxidation refer to?
- The gain of electrons, as well as negative charges.
- An oxidized substance releases energy.
What does reduction refer to?
- The loss of electrons, as well as positive charges.
- A reduced substance gains energy
What is a oxidation-reduction reaction?
- A chemical reaction that deals with the loss and gain of electrons.
- When a substance oxidizes (oxidation) it looses electrons and releases energy, another substance will reduce (reduction) and gain electrons as well as energy.
- Oxidation-reduction reactions are always parallel, when a substance is oxidized, another is always reduced.
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