Chapter 2 Vocab Flashcards
(35 cards)
Acid!
a hydrogen containing substance and is capable of donating a proton to another substance
activation energy
the minimum amount of energy required to convert molecules into a product
adhesion
the attraction of different molecules
amino acid!
proteins formed by combined molecules
atom
the smallest unit in life
base!
a neutralizing substance and accepts hydrogen ions into water
bond energy!
the energy needed to break apart the atoms involved in a molecular bond.
carbohydrate
sugar molecules
catalyst!
an unchanged and unconsumed molecules that can make a chemical reaction happen easier.
chemical reaction!
when atoms are either formed or broken
cohesion
the attraction of the same molecules
compound!
a substance that is made of two or more elements combined in ratios.
covalent bond !
when electrons are shared evenly between atoms
element!
cannot be split into similar substances by chemical means.
endothermic!
organisms that maintain constant body temperatures.
enzyme!
protein molecules in cells that works as biological catalysts.!
equilibrium!
when body systems are balanced with a equal and opposite force.
exothermic!
a chemical reaction that releases energy in the form or light and heat
fatty acid!
the fat in our body’s and in the food we eat
hydrogen bond!
the attraction between a hydrogen atom and another atom with a weak electron charge.
ion!
the electrical charge in one or more atoms
ionic bond!
when an atom gives electron(s) to another atom so each can have a full set
lipid!
a fatty substance
molecule
one or more atoms combined
