periodic table
what are the rows called?
the rows are called periods
what do the electrons travel on?
electron cloud
how many chemical changes are there?
5
describe a homogeneous mixture
is a solid or liquid that stays the same trough out
how do u calculate density?
D=m/v
name the elements name that is on the metals side of the periodic table but is a nonmetal?
hydrogen
what is the name of the center on an atom?
nucleus
how many physical changes?
3
describe a heterogeneous mixture
a mixture that isn't the same trough out
what is the density that will cause the object to float?
less then 1
what are the columns in on periodic table?
families
what make up an atom?
nucleus, neutron,electron, proton
a rusted bike
chemical or physical ?
chemical
what is a mixture
what makes up density
how much space an object takes up