Which statement is FALSE about Dalton's atomic model? Each element has its own kind of atom.
Compounds are created when atoms of different elements combine.
Atoms cannot be created in chemical changes.
All matter is made of atoms.
Matter must contain positive and negative charges.

Plz choose one of the compounds from the table and explain how you know the numbers of atoms in your formula. is it possible for two different compounds to be made from the exact same two elements? why or why not? with a limited number of elements (less than 120 are known), does this mean we also have a small number of compounds or do we have a large number of compounds in this world?

In 2002, the rare earth elements mine in mountain pass, california was closed because

Helium decays to form lithium. which equation correctly describes this decay?