Question

1. analyze: while testing your predictions, you may have noticed that there were specific temperatures at which the phase of the water always changed.

a. at what temperature does water melt (change from solid to liquid)?

b. at what temperature does water boil (change from liquid to gas)?

c. at what temperature does water condense (change from gas to liquid)?

d. at what temperature does water freeze (change from liquid to solid)?

1. extend your thinking: describe an example of a phase change youve seen in real life.

Explanation:

For question 4, these are standard phase change temperatures of water at standard atmospheric pressure. Melting and freezing occur at the same temperature, while boiling and condensation occur at the same temperature under standard conditions. For question 5, the example is a common real-life observation of a phase change.

Answer:

4.
A. 0°C (32°F)
B. 100°C (212°F)
C. 100°C (212°F)
D. 0°C (32°F)
5.
An example is seeing dew form on grass overnight: water vapor (gas) in the air cools down and condenses into liquid water droplets on the cool grass surface.