Name an element that exists in a crystal lattice at stp

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

Ahypothesis must be testable and falsifiable to be considered scientific a. trueb. false

Which statement best describes what happens when molecular compounds melt