LESSON 4: Chemical Reactions and Enzymes Flashcards
What is a chemical reaction?
A process that changes or transforms on set of chemicals inot another
Reactants are…
elements or compounds that enter into a chemical reaction
Products are…
elements or compounds that are produced by a chemical reaction
This chemical reaction can occur on its own or spontaneously
One that releases energy
EXothermic (EXhales energy)
This chemical reaction will not occur without a source of energy
One that absorbs energy
ENDothermic (prodcuts END higher than reactants)
Humans release the energy so that they can…
grow tall, to breathe, to think, and even to dream
What is energy activation?
The amount of energy needed to get a reaction started
What is a catalyst?
A substance that’s speeds up the chemical reaction
By lowering the needed activation energy
How do catalysts work?
By lowering the reaction’s activation energy
What are enzymes?
natural catalysts , made of proteins, that speed us chemical reactions
enzymes are ______ specific
substraight
These two things can affect enzyme activity
Temperature and PH. If to hot it can deform an enzyme leaving it deformed and useless
