Define each word atom
chemical compound
crystal
compound
electron
element
ion
matter
mineral
molecule
neutron
nucleus
proton
silicate

Atom- the basic unit of a chemical element

chemical compound- chemical substance

crystal- a piece of a homogeneous solid substance

compound- a mixture

electron- subatomic particle with a negative energy

element- part of something abstract

ion- atom or molecule with a net electric charge

matter- physical substance in general

mineral- a solid inorganic substance of natural occurrence

molecule- group of atoms bonded together

neutron- neither negatively nor positively charged

nucleus- the center of an atom

proton- positively charged

silicate- a salt in which the anion contains silicon & oxygen

The density of water is 1 g/cm cubed and in order for the pebble to sink its density has to be greater than the density of water and in order for the twig to float its density has to be less than the density of water