Which substance is composed of only one type of atom? - Need asap! Water
Gold
Salt
Sugar

As air becomes more dense, (select all that apply) o. air weighs less o. gas molecules are closer together o. air is colder o. air weighs more o. gas molecules are further apart o. air is hotter

Why does a plastic bottle that is sealed at a high altitude change it’s shape when taken to lower altitude

Δu of , in kj/kg, as it isto k, (a)as a of , (b) at , (c) at .