The Atom
This subatomic particle has mass 1 and charge +1
proton
this is the state of matter with the lowest-energy atoms/molecules
solid
This is the standard unit for measuring mass
grams
water boiling represents this kind of change
physical change
Elements on the periodic table are arranged in order by increasing this property
atomic number
This subatomic particle has mass 1 and charge 0
neutron
substances in this state of matter have definite volume but no definite shape
liquid
This is the standard unit for measuring volume
liters
paper burning represents this kind of change
chemical
This is the chemical symbol for oxygen
O
This subatomic particle has mass 0 and charge -1
electron
substances in this state of matter have no fixed shape nor volume
gas
This is the instrument used to take mass measurements
balance
breaking a pencil represents this kind of change
physical
This is the chemical symbol for iron
Fe
This is the location in an atom where the mass is located
nucleus
heating a solid at normal pressure will cause this phase change to occur
melting
This is the instrument used to make volume measurements
graduated cylinder
salt dissolving in water represents this kind of change
physical
This is the chemical symbol for copper
Cu
This is the location in the atom where the electrons are located
orbitals
this is the phase change that occurs when a gas changes directly into a solid without going through the liquid phase first
deposition
This is the calculation for density
mass/volume
a car engine using gasoline represents this kind of change
chemical
The rightmost column on the periodic table (He, Ne, Ar, Kr, Xe, Ra) are collectively referred to by this group name
noble gases