PSU1
balance
scale to measure mass
combustion
the process of burning something
electron
a subatomic particle that has a negative charge
valence electrons
electrons on the outermost energy level of an atom
acid
a substance that increases the hydrogen ion concentration of a solution
kilo
1000
evaporation
liquid to gas
condensation
gas to liquid
malleable
capable of being shaped
deposition
gas to solid
density
mass/volume
proton
a subatomic particle that has a positive charge and that is found in the nucleus of an atom
neutron
a subatomic particle that has no charge and that is found in the nucleus of an atom
fission
the splitting of an atomic nucleus to release energy
fusion
creation of energy by joining the nuclei of two hydrogen atoms to form helium
mass
the amount of matter in an object
compound
a substance made up of atoms of two or more different elements joined by chemical bonds
ions
positively and negatively charged atoms
cation
a positively charged ion
anion
a negatively charged ion
matter
base
a substance that decreases the hydrogen ion concentration in a solution
catalyst
substance that speeds up the rate of a chemical reaction
decomposition
a chemical reaction that breaks down compounds into simpler products
pH
hydrogen ion concentration