Unit 3 Part 1 - Chemical Reactions and Enzymes
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11 Terms
Reactants
Starting substances
Products
Substances formed by chemical reaction
Activation energy
The minimum amount of energy needed for a chemical reaction to occur
What conditions can help reach activation energy faster?
Increase temperature
Increase no. of molecules
Pressure on molecules
All conditions cause molecules to collide with each other more.
Exothermic Reaction
Has a higher energy in reactants than in products (releases heat into environment)
Endothermic Reaction
Has lower energy in reactants than in products (absorbs heat from environment)
Catalyst
A substance that lowers the activation energy needed to start a chemical reaction.
Enzymes
Are catalysts that speedup the rate of chemical reactions.
Substrates
Reactants thar bind to the enzyme
Active site
location where a substrate binds to an enzyme
Substrate-Enzyme Complex
Enzyme while attached to the substrate
Note 
Flashcards (100)