definition Flashcards
matter
anything that occupies space and has mass
mass
the amount of matter in any object which does not change
weight
the force of gravity acting on matter does change
atoms
the smallest unit of matter that retains the properties and characteristics of the element
elements
molecule
when two or more atoms share electrons the resulting combination
chemical symbol
one or two letter of the element name
electron
ion
is a particle that has a positive or negative charge because it has unequal number of protons and electrons
chemistry
is the science of the structure and interactions of matter
free radical
is an atom or group of atoms with an unpaired electron in the outermost shell
cation
a positively charge ion
anion
a negatively charged ion
chemical bonds
the force that holds together the atoms of a molecule or a compound
metabolism
all the chemical reaction occurring in the body
catalyst
chemical compounds that speed up chemical reactions by lowering the activation energy needed for a reaction to occur
solvent
dissolve another substance
anabolism
all the synthesis reactions that occur in your body
catabolism
all the decomposition reactions that occurs in your body
solution
solute
salt
acid
base
ph scale
hydrophilic
hydrophobic
concentration
carbohydrates
monosaccharides
lipids
fatty acid
triglyceride
proteins
amino acids
DNA
RNA
ATP
cell
plasma membrane
lipid bilayer
selective permeability
concentration gradient
passive process