Unit 7 Review

What is potential energy?

• moving energy

• stored energy

• renewable energy

• non renewable energy

Tags

NGSS.MS-PS2-4

NGSS.MS-PS3-2

What is kinetic energy?

• moving energy

• potential energy

• stored energy

• renewable energy

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-4

NGSS.MS-PS3-5

What  is the formula to calculate heat energy required to raise the temperature of any substance?

• Q = m Cp ∆T
• Q = m Cp
• Q =  ½ m v
• m = Q Cp

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What would be the effect on the particles if more heat is supplied to the system?

• They would slow down
• They would stop moving
• They would speed up
• There would be no effect

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-5

A sample of iron receives 50.J of heat energy that raises the temperature of the iron 25.0°C. If iron has a specific heat of  0.10 J/g°C, what is the mass of the iron sample?

• 25 g
• 30 g
• 20 g
• 50 g

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

The specific heat is the amount of energy needed to raise the temperature one degree Celsius of 1 gram of a substance.

• True
• False

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Using the heat equation, what would the formula look like if we were solving for change in temperature?

• Q m = ∆T c

• Q / (m c) = ∆T

• Q m / c = ∆T

• m c Q = ∆T

The specific heat(c) of copper is 0.39 J/g °C. What is the temperature change(∆t) when 100 Joules of heat(Q) is added to 20 grams?

• 12.82 °C
• 24.12°C
• 351 °C

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What is the symbol for energy?

• Q

• T

• m

• Cp

The temperature of an unknown piece of metal with a mass of 30.00 g changes from 25.0 °C to 35.0 °C when the metal absorbs 350.0 J of energy. What is the specific heat of the metal?

• 1.17 J/g°C
• -1.17 J/g°C
• 0.857 J/g°C
• -0.857 J/g°C

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4