Question

3.43 identify each of the following changes of state as melting, freezing, sublimation, or deposition: a. the solid structure of a substance breaks down as liquid forms. b. coffee is freeze - dried. c. water on the street turns to ice during a cold wintry night. d. ice crystals form on a package of frozen corn.

Explanation:

• a. Melting is the process where a solid changes to a liquid by breaking the solid - state structure.
• b. Freeze - drying of coffee involves sublimation, where the ice in frozen coffee directly changes to vapor.
• c. Freezing is when a liquid (water) changes to a solid (ice).
• d. Deposition occurs when water vapor directly changes to ice crystals on the frozen corn package.

Answer:

a. Melting
b. Sublimation
c. Freezing
d. Deposition