par chua sonya Il y a 17 années
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par Emma Millán
par Harold shumager
par Allison Thayne
par Hannah Joy
weight average mass of an element
charge 0
charge -1
surround nucleus
charge +1
molecule
form from covalent bonding
sharing of electron
cannot be decomposed by chem process
compound
constant composition
element combine chemically
differ from constituent element
can be from by ionic bonding
transfer of electron
can be decomposed by chem process
element
uniform
homogenous
not uniform
heterogenous