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20 Cards in this Set

  • Front
  • Back

What is a chemical reaction?

The formation of new chemical bonds or the breaking of old chemical bonds between atoms.

What is potential energy?

Energy stored by matter due to its position.

What is kinetic energy?

The energy associated with matter in motion.

What is chemical energy?

A form of potential energy that is stored in the bonds of compounds and molecules.

What is the law of conservation of energy?

Energy can be neither created nor destroyed.

It may be converted from one form to another.

What is an exergonic reaction?

Release of more energy than is absorbed.

What is an endergonic reaction?

Absorbing of more energy than is released.

What is activation energy?

The minimum amount of energy required for a chemical reaction to occur.

Is this reaction exergonic or endergonic?

Is this reaction exergonic or endergonic?

This reaction is exergonic because the reactants have more potential energy than the products.

What two factors influence the chance that a collision will occur and cause a chemical reaction?

Concentration: The greater the concentration, the greater the chance a reaction will occur

Temperature: The higher the temperature, the more likely a reaction will occur

What are catalysts?

Chemical compounds that speed up chemical reactions by lowering the activation energy needed for a reaction to occur.

Does a catalyst change the potential energies of the products and reactants?

No. A catalyst does not change the potential energies of the products and reactants; it only lowers the activation energy needed to get the reaction going.

What are synthesis reactions?

The process when two or more atoms, ions, or molecules combine to form new and larger molecules.

What is anabolism?

All of the synthesis reactions that occur in your body, collectively.

What are decomposition reactions?

A reaction that splits up large molecules into smaller atoms, ions, or molecules.

What is catabolism?

The decomposition reactions that occur in your body, collectively.

What are exchange reactions?

Reactions that consist of both synthesis and decomposition reactions.

What are reversible reactions?

Reactions in which the products can revert to the original reactants.

What is oxidation?

Refers to the loss of electrons; in the process the oxidized substance releases energy.

What is reduction?

Refers to the gain of electrons; in the process the reduced substance gains energy.