Chemistery
counting atoms in molecules
Balancing chemical equations
step 1: make a table to show what is present in your equation as given.
step 2: Balance any polyatomic ions.
step 3: balance all ions that are not H or O.
step 4: Balance H or O- whichever does not appear as diatomic comound.
step 5: Balance O or H- whichever os left over.
step 6: Recount evrything.
Ionic charges and chemical families
The atom
Protons: protons are located inside the nucleus.
Electrons: Located outside the nucleus.
Atomic number: the number of protons in the nucleus is called the atomic number.