matter and organic compunds
anything that has mass and takes up space
matter
has sugar or starch
carbohydrates
energy is emitted during the reaction
exothermic
7 on the PH scale
expands when frozen
water
has all the same atom
element
made of chains of fatty acids
lipids
energy is absorbed the reaction
endothermic
8-14 on the PH scale
base
speed up reaction in cells without them most life would die
enzyme
elements bonded together
compound
made of chains of amino acids
proteins
energy requred to start a chemical reaction
activation energy
0-6 on the PH scale
acid
concentration of hydronium ions
PH
have a definite make up
chemical substances
triglycerides the main form of energy stored energy in animals
lipids
sum of all the reactions within a organism
metabolism
-electrical charge difference between areas of molecule
polarity
exothermic reactions which break down large molecules and supply energy
catabolic reactions
contains carbon and is found in living things
organic compund
built of smaller pieces called monosaccharides
carbohydrates
reactions endothermic reaction which build up large molecules and require energy
anabolic reactions
keep water in the liquid phase even though it shouldn't be at room temperature
hydrogen bonds
ribonucleic acid
RNA