Chemistery

Plus de détails

Intro to Chem .

par Melanie Thomas

Chapter 1

par Jolie Tang

Nuclear Physics

par ASIF HUQ

Ionic Compounds

par Hernan Scott

Chemistery

The atom

Atomic number: the number of protons in the nucleus is called the atomic number.

Electrons: Located outside the nucleus.

Protons: protons are located inside the nucleus.

Ionic charges and chemical families

Balancing chemical equations

step 6: Recount evrything.

step 5: Balance O or H- whichever os left over.

step 4: Balance H or O- whichever does not appear as diatomic comound.

step 3: balance all ions that are not H or O.

step 2: Balance any polyatomic ions.

step 1: make a table to show what is present in your equation as given.

counting atoms in molecules