Heat and Specific Heat

What unit do you use to measure Thermal Energy?

• J/Kg ºC

• Kg

• ºC

• J

The symbol for specific heat is .......

• C

• Q

• m

• T

What is the equation to measure change in Thermal Energy?

• Q=mc∆t

• Q=mc

• Q= ∆mct

• m=QC

Tags

NGSS.MS-PS3-3

NGSS.MS-PS3-4

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.MS-PS1-4

NGSS.MS-PS3-4

Equal mass samples of Copper, Stainless Steel, Carbon Steel, and Zinc were all heated using 10,000 JOULES of thermal energy. Based on the chart, which material would be have the SMALLEST change in temperature?

• Copper

• Carbon Steel

• Zinc

• Stainless Steel

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

If 200 grams of water is to be heated from 24.0° C to  100.0° C to make a cup of tea, what is the mass and what is the change in temperature?

• m=100g,  ∆t= 224 C

• m=200g,  ∆t=124 C

• m=100g,  ∆t=24 C

• m=200g,  ∆t=76 C

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

20 g of water. specific heat of water is 4.18 J/g°C. temperature changes from 25° C to 20° C, what will the value of q be?

• positive

• negative

• equilibrium

• q does not exist

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

The unit for heat energy is

• J

• J/gC

• g

Tags

NGSS.MS-PS3-4

When you place the metal in boiling water, heat flows from the _________ to the _______.

• metal to the boiling water

• bottom of the metal to the top half of the metal

• bottom of the water to the top of the water

• boiling water to the metal

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

NGSS.MS-PS3-4

When water is heated from 10°C to 15°C What is the change in temperature?

• 10 °C

• 5 °C

• 15 °C

• 25 °C

Tags

NGSS.MS-PS1-4