Predicting Physical Changes from Heat

A glass of water was left outside on the coldest day of the year. The low temperature might cause what change to occur in the water?

• Solid changes to a gas.

• Solid changes to a liquid.

• Liquid changes to a gas.

• Liquid changes to a solid.

A class is learning about changes from heat. Before the activity begins, the teacher provides a chart for the students to record what physical change they predict will happen in each situation. What would be the correct prediction in each situation? Select the correct answer in each row. What physical change will happen to a chocolate bar left in the car on a summer day?

• Melting

• Freezing

• Evaporation

• Condensation

A class is learning about changes from heat. Before the activity begins, the teacher provides a chart for the students to record what physical change they predict will happen in each situation. What would be the correct prediction in each situation? Select the correct answer in each row. What physical change will happen to a cup of water placed in a warm pan on the stove?

• Melting

• Freezing

• Evaporation

• Condensation

Which process is involved in the following scenario? Making popsicles from fruit juice.

• Melting

• Freezing

• Evaporation

• Condensation

Which process is involved in the following scenario? A puddle you saw in the morning is gone when you go back outside in the afternoon.

• Melting

• Freezing

• Evaporation

• Condensation

Adding or removing heat can change the physical state of matter. One example is solid matter changing to liquid matter. Which pictures illustrate the physical change of melting? Select two correct answers.

• A melting candle

• A pot being heated

• Icicles melting

• Muffins baking

• A melting ice cream bar

When an ice cube is placed on the sidewalk on a hot day, a series of changes occur to its physical state. Move the states of matter to show the changes in the order they would occur.

• solid → liquid → gas

• gas → liquid → solid

• liquid → solid → gas

• solid → gas → liquid

In the illustration, which is an example of a gas?

• The Straw

• The Ice

• The Bubbles

• The Glass

What happens when liquid water is heated?

• The water will freeze making ice.

• The water will evaporate creating ice.

• The water will evaporate creating vapor.

• The water will melt and remain liquid water.

Refer to the image showing three phases of water: A. ICE, B. WATER, C. STEAM. Which phase of water is coldest?

• ice

• water

• steam

• all phases are the same temperature