Heat and Matter

Two liquids with temperatures of 50 degrees and 100 degrees are combined what is their combined temperature?

• 50

• 75

• 100

• 150

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Energy moving from high to low temperature

Tags

NGSS.MS-PS1-4

Two liquids with temperatures of 60 degrees and 80 degrees are combined what is their combined temperature?

• 60

• 70

• 80

• 140

Tags

NGSS.MS-PS1-4

What happens to water molecules when a large quantity of thermal energy is added to water in the liquid state?

• Each molecule gives up kinetic energy and eventually stops moving.

• The more thermal energy added, the greater the attraction between molecules.

• The water molecules become more packed close together, and their temperature increase.

• The molecules gain kinetic energy, more farther apart, and become a gas.

Tags

NGSS.MS-PS1-4

In science, the term "heat" can be used to describe...

• The transfer of thermal energy from one object to another.

• The average kinetic energy of the system as a whole.

• The motion of atoms or molecules within a substance.

• The average temperature of a system over time.

Tags

NGSS.MS-PS3-3

NGSS.MS-PS3-4

What does the total thermal energy of a system depend on?

• The temperature.

• The state of the matter.

• The total number of the atoms in the system.

• It depends on the temperature, the total number of atoms in the system, and the state of the material.

Tags

NGSS.MS-PS1-4

A container of hot water was left out on a table. Some of its thermal energy was transferred to the environment. The results (in Celsius) are shown. What was the change in temperature resulting from this heat transfer in degrees Celsius?

• -5 degrees C

• -6 degrees C

• 5 degrees C

• 6 degrees C

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Red food coloring was placed in hot water. Blue food coloring was placed in cold water. Both beakers had the same amount of water and the same amount of food coloring was added. However, the red food coloring dispersed in the water faster than the blue food coloring.

Claim: The molecules in the ____________ water moved at a _____________ rate causing the food coloring to move through the water quickly.

• cold, faster

• hot, slower

• cold, slower

• hot, faster

Tags

NGSS.MS-PS1-4

Red food coloring was placed in hot water. Blue food coloring was placed in cold water. Both beakers had the same amount of water and the same amount of food coloring was added. However, the red food coloring dispersed in the water faster than the blue food coloring.

Evidence: The _______ food coloring spreads out faster than the _________ food coloring. In the last picture, the red food coloring was __________ in the hot water but the blue food coloring _________ completely mix in the cold water.

• blue, red, did not mix, mixed

• red, blue, mixed in, did not

• red, blue, hot, cold

• blue, red, cold, hot

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Red food coloring was placed in hot water. Blue food coloring was placed in cold water. Both beakers had the same amount of water and the same amount of food coloring was added. However, the red food coloring dispersed in the water faster than the blue food coloring.

Reasoning: When water is hot, the molecules ___________ up and _____________ apart. When water is colder, molecules move at a ______________rate. The _______ dye spreads out faster in the hot water

• speed, spread, faster, red

• speed, spread, slower, blue

• speed, spread, faster, blue

• speed, spread, slower, red

Tags

NGSS.MS-PS1-4