Specific Heat

How does heat flow?

• Always from cold to warm
• Always from warm to cold
• Both warm to cold & cold to warm
• It depends on the temperature

Tags

NGSS.HS-PS3-4

What is the equation to measure change in Thermal Energy?

• Q=mc∆t
• Q=mc
• Q= ∆mct
• m=QC

Tags

NGSS.HS-PS3-4

There are four cups of hot cocoa. The cup sizes are shown. The temperature of the cocoa in each cup is 25 degrees celsius. Which cup has the MOST thermal energy?

• Large cup (Trenta)
• Small cup (Tall)
• Medium cup (Venti)
• All three are the same temperature so they have the same thermal energy

Tags

NGSS.HS-PS3-4

What unit do you use to measure Thermal Energy?

• J/Kg ºC
• Kg
• ºC
• J

Tags

NGSS.HS-PS3-4

When a  piece of aluminum foil is taken out of the oven and cools from 100° C to 50°C, What is the change in temperature?

• 50°
• 0°
• 100°
• 150°

Tags

NGSS.MS-PS3-4

The specific heat of aluminum is 0.21 cal/g°C.  How much heat(Q) is released when a 10 g piece of aluminum foil is taken out of the oven and cools from 100° to 50°?

• 105 J
• 10.5 J
• 1.05 J
• 50 J

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-4

There are 2 pans of water, one has 100 mL in it and one has 1000mL. You add 4000 joules of energy,  which one has the bigger change in temperature?

• 100 mL
• 1000 mL
• They the same material so they both heat to the same temperature
• They both will cool down.

Tags

NGSS.HS-PS3-1

If I have 2 blocks of Aluminium (one of 1kg and one of 10 kg) and heat them up with 6,000 Joules of energy.
Which one will have the SMALLEST change in temperature?

• 1 kg
• 10 kg
• They both heat up  to the same temperature
• It depends on the temperature of the room

Tags

NGSS.HS-PS3-4

20 g of water. specific heat of water is 4.18 J/g°C.  temperature changes from 25° C to 20° C, how much heat energy (Q) moves from the water to the surroundings?

• 418 Joules
• 209 J
• 83 J
• 4.18 J

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-4

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 of copper?

• 12.82 °C
• 24.12°C
• 351 °C

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-4