Need help ASAP please

Alice added sodium chloride to water and stirred the water for several minutes. alice is most likely trying to demonstrate that ionic compounds a. are hard. b. can dissolve. c. are clear. d. can melt.

When traveling from a soild to air, what would you expect a sound wave to do? a) stay at the same speed b) speed up c) slow down d) fluctuate speed

Acold glass is left sitting outside on a hot day. soon, water droplets form on the outside of the glass. describe the events that must occur for the water droplets to form on the glass.