During which phase change does the arrangement of water molecules become more orderly?

a. melting
b. freezing
c. boiling
d. condensing

Harry lives in a city, and he has a lung condition known as asthma. on certain days, harry has to stay inside because pollutants in the air make it difficult for him to breathe. which of these pollution sources are nonpoint sources that might bother harry if he goes outside? choose the two that apply.

What happens in the particles of a gas when the gas is compressed

What does a complete balanced chemical equation include? a. exothermic coefficients b. endothermic coefficients c. valence electrons d. molar coefficients