If an atom has 12 protons, how many electrons will it have?

What is a compound?

What is another name for positive ions?

What is another name for negative ions?

Why are ions stable or unreactive?

What are isotopes?

What is the conservation of mass?

metal carbonate + heat goes to what?

alkali metal + water goes to what?

What is the relative formula mass of a compound?

How do you work out the percentage of an element in a compound?

What is empirical formula?

How do you calculate empirical formula?

What is the yield of a reaction?

How do you calculate percentage yield?