U7 : L 1 What Are the States of Water?

The states of matter differ in many ways, including shape and volume. The following three figures show the particles in a solid, a liquid, and a gas.

Which of the following correctly identifies the state of matter?

• 3: Gas

• 2: Solid

• 1: Liquid

• 2: liquid

The three states of matter are solid, liquid, and gas. Which process changes water vapor into liquid water?

• matter

• density

• volume

• temperature

The three states of matter are solid, liquid, and gas. Which process changes water vapor into liquid water?

• condensation

• evaporation

• freezing

• melting

Riley and Jill are studying what happens to matter when it changes state. They found this list of statements. Which of these statements is true?

• When matter changes state, its mass changes.

• When matter changes state, its mass remains the same.

• When matter changes state, its boiling point might also change.

• When matter changes state, the space between particles in the matter stays the same.

Saqib placed an ice cube on a plate. The ice cube changed from a solid to a liquid. What happened to the amount of matter in the ice cube?

• It doubled.

• It tripled.

• It stayed the same.

• It decreased slightly.

Jose has a pot full of water. He knows that water can change states when energy is added or removed. Which of the following actions would add energy to the pot of water?

• placing the water in the freezer

• heating the water on the stove

• leaving the water outside on a cold night

• pouring the water into a larger container

Water changes states when energy is added or taken away. What happens to water vapor when energy is taken away?

• It melts into a solid.

• It freezes into a liquid.

• It evaporates into a solid.

• It condenses into a liquid.

Water is matter. All matter is made of particles. Which statement best describes how water particles are arranged in different states of matter?

• The particles in ice are locked together and vibrate in place.

• The particles in water vapor are very close and move rapidly.

• The particles in water vapor are far apart and move slowly.

• The particles in liquid water are locked together and vibrate in place.

Kym has set up an experiment with four beakers, each filled with 100 mL of water at four different temperatures. She plans to time how long it takes for 1 tsp of sugar to dissolve at each temperature. To determine if there is a trend, she will add the sugar to each beaker of water without stirring, wait for it to dissolve, and then plot her results on a graph. Which of the following graphs would most likely show the results of Kym’s experiment?

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In which of the following ways are mountain and valley breezes similar to land and sea breezes?

• Both take place only in hilly areas.

• Both take place only during rainy weather.

• Both are stronger at night than during the day.

• Both are caused by differences in temperature.