physical properties
measured without causing a change in the identity of the material
density
amount of matter packed into a given volume
malleability
can easily be hammered into shapes
ductility
drawn into long, thin wires
conductivity
ability to transfer heat or electricity
example of a physical property?
color, length
chemical changes
result in a different material
Proton
positive, and in the nucleus
Electron
negative, and in the orbitals
neutron
no charge, and in the nucleus
element
cannot be broken down simpler
atom
most basic particle in an element
ion
charged atom
cation
positive
anion
negative
law of conservation of mass-energy
matter and energy can neither be created nor destroyed, only converted
kinetic molecular theory
tiny particles in constant motion
solid
definite shape and volume
difficult to compress
closely packed
liquid
definite volume, assume shape of container
packed closely
difficult to compress
gas
no definite volume or shape
easily compressed
condensation
gas to liquid
vaporization
liquid to gas
freezing
liquid to solid
melting
solid to liquid
