|
C-12 and C-14 are ____ of carbon atoms. Each has six protons.
|
atoms
|
|
All atoms of an element have the same number of ____.
|
bonds
|
|
During chemical reactions, reactants are converted to ____.
|
isotopes
|
|
A water molecule (H2O) has one oxygen and two hydrogen ____.
|
molecules
|
|
Na and Cl are the ____ for sodium and chlorine.
|
neutrons
|
|
The isotopes of an element have different numbers of ____.
|
products
|
|
At STP, equal volumes of gases have an equal number of ____.
|
protons
|
|
Atoms can be joined together by ____ to form molecules.
|
symbols
|
