What is a physical property of water? * not flammable
reacts with sodium
liquid at room temperature

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?

Joan writes four numbers on the board in standard form, and then she writes their scientific notation

Which organism develops breathing organism develops breathing organs from pharyngeal arches? shark, spider, sea star, sea horse