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12 Cards in this Set

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Define chemical reaction
A process that changes one set of chemicals into another set of chemicals
Explaine the changes in chemical reactions
Chemical reactions always involve changes in chemical bonds. The breaking of bonds, or the formation of new bonds.
Reactant
The elements or compounds that enter into the reaction
Products
Elements or compounds produced by a reaction
Explain how carbonic acid helps us get rid of CO2
Carbonic acid enables the bloodstream to carry CO2 to the lungs. (CO2 is not very soluble in water)
Describe how energy is released or absorbed in chemical reactions
Bonds Break - Energy is released

Bonds Form - Energy is absorbed or used.
Contrast chemical reactions that release and absorb energy.
Reactions that release energy - spontaneous and fast

Reactions that absorb energy - need energy - slow
Define activation energy
The energy needed to get a reaction started (lighting match to paper)
Explain the role of a catalyst
A substance that speeds up the rate of a chemical reaction (Because of slowness or have too high activation energy for living tissue)
Explain the purpose of enzymes
Enzymes are biological catalysts. They are proteins

They lower activation energy
Carbonic anhydrase
speeds up CO2 reaction
Explain this statement

Enzymes are specific
Enzymes - speed up only one type of reaction

Name is usually derived from the reaction speeds up.