Latent heat Concepts

What does the term 'latent heat' refer to?

• Heat used to change the state of a substance without changing its temperature

• Heat used to raise the temperature of a substance

• Heat lost during a chemical reaction

• Heat generated from electrical energy

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

At what temperature did the ice remain until it completely melted?

• 0 degrees Celsius

• 10 degrees Celsius

• 100 degrees Celsius

• 50 degrees Celsius

Tags

NGSS.MS-PS1-4

What is the boiling point of water as observed in the experiment?

• 150 degrees Celsius

• 120 degrees Celsius

• 100 degrees Celsius

• 90 degrees Celsius

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What happens to the temperature of water as it starts boiling?

• It continues to rise

• It fluctuates

• It decreases

• It remains constant

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What is required for water to change from liquid to gas at boiling point?

• Latent heat of vaporization

• Decrease in pressure

• Reduction in volume

• Increase in kinetic energy only

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4