Rank the following from highest to lowest melting point
KF
Cao
RbBr
CaF

Which statement is true about ionic compounds?

(apex) when a cup of water is dropped, as the cup falls, the water in the cup falls out true or false?

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