Heat Equation Set Up Exit Ticket

A glass of water cools down from 100 °C to 50 °C, what is ΔT?

• 25 °C
• 50 °C

• 100 °C
• -50 °C

Tags

NGSS.MS-PS3-4

A glass of water is heated from 20 °C to 50 °C, what is ΔT?

• -30°C

• 50 °C

• 100 °C
• 30 °C

A 300 g piece of copper at 150°C is dropped into water and was reduced to 100°C . How much energy was transferred to the water? (Specific heat of copper = 0.39 J/g°C) Which of these would correct set up?

• Q=(300g)(0.39 J/g°C)(-50 °C)

• Q=(0.39g)(300 J/g°C)(50 °C)

• 0.39 J =(300g)(C)(-50 °C)

• Q=(m)(0.39 J/g°C)(50 °C)

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-4

What would you substitute for "m" in this word problem?

In a calorimeter, 100 g of a metal at 100°C is placed water at 20°C. The final temperature of the water is 24°C. If the specific heat capacity of water is 4.18 J/g°C, what is the specific heat of the metal?

• 200 g
• 100 g
• 75 g
• 50 g

Tags

NGSS.HS-PS3-1

What would be the correct set up for this problem:

A brick weighing 500 g was allowed to cool from 130 °C to 100 °C. If the specific heat capacity of brick is 0.20 J/g°C, how much heat energy was released?

• 0.2 J=(500g)(0.20 J/g°C)(-30 °C)

• Q=(m)(0.20 J/g°C)(-30 °C)

• Q=(500g)(0.20 J/g°C)(-30 °C)

• Q=(500g)(0.20 J/g°C)(30 °C)

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-2

NGSS.HS-PS3-4

What was the hardest part of learning this topic?

Tags

NGSS.HS-PS1-2

NGSS.HS-PS4-3

A 200 g piece of iron is heated from 25°C to 75°C. What is the change in temperature, ΔT?

• 50 °C

• 25 °C

• 75 °C

• 100 °C

What is the correct setup for this problem:

A 150 g aluminum block cools from 200°C to 150°C. If the specific heat capacity of aluminum is 0.90 J/g°C, how much heat energy is released?

• Q=(150g)(0.90 J/g°C)(-50 °C)

• Q=(150g)(0.90 J/g°C)(50 °C)

• Q=(0.90g)(150 J/g°C)(-50 °C)

• Q=(m)(0.90 J/g°C)(-50 °C)

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-4

A 250 g sample of water is heated from 10°C to 60°C. What is the change in temperature, ΔT?

• 50 °C

• 60 °C

• 70 °C

• 40 °C