Which statement best describes the process that arrow 1 represents if it is pointing from liquid to gas? molecules are speeding up as boiling occurs. molecules are slowing to a stop while freezing. molecules are slowing down during condensation. molecules are vibrating in stationary positions.

The answer is molecules are speeding up as boiling occurs. Boiling, like evaporation, can change a substance from a liquid to gas. As the liquid is heated, they move around faster and the liquid molecules absorb heat, giving them energy to break the bonds that connect them to other liquid molecules. When the liquid starts to boil, bubbles of vapor form and rise as gas molecules.