Why should pets be allowed in school??

Asap 1. what happens to particles when a substance gains energy and changes state? 2. what happens to the energy that is lost when water freezes? 3. how does the movement of particles in a stick of butter differ from the movement of particles in a dish of melted butter? 4. as water is cooled, at what temperature do its particles become fixed in place? 5. how do evaporation and boiling differ?

What discovery would weaken the primordial soup hypothesis of the origin of life? question 19 options: lightning was common on early earth. earth’s early atmosphere contained carbon dioxide, water, and trace gases. earth’s early oceans were warm and shallow. asteroid impacts were uncommon when life is presumed to have begun.

What do these two changes have in common? acid rain weathering a marble statue and silver jewelry tarnishing