Q=MCAT

The SI unit of heat and energy is the __________.

• Celcius

• Kelvin

• joule

• watt

Tags

NGSS.MS-PS3-4

How much heat does an aluminum block absorb if 10.00 grams are heated from 25.0^oC to 50.0^oC? the specific heat of aluminum is 0.9025 J/g^oC

• 450

• -450

• 225

• -225

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-4

The specific heat of aluminum is 0.9025 J/g°C. How much heat(Q) is released when a 10.0 g piece of aluminum foil is taken out of the oven and cools from 100.0° to 50.0°?

• 451 J

• 45.1 J

• 400 J

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-4

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=200g

  ∆t= -76

• m=200g

  ∆t=124

• m=200

  ∆t=100

• m=200g

  ∆t=76

Tags

NGSS.HS-PS3-4

20.0 g of water. specific heat of water is 4.18 J/g°C. temperature changes from 25.0° C to 20.0° C, how much heat energy (Q) moves from the water to the surroundings?

• 418 J

• 209 J

• 83 J

• 4.18 J

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-4

The unit for mass is

• g

• J

• J/gC

• $\degree C$

The unit for temperature is

• $\degree C$

• J

• J/gC

• g

How many Joules of energy are required to change 10 gram of ice at -2 C to water at 20 C? The specific heat of water is 2.1 J/(g · ºC).

• 440 J

• 880 J

• 10,140 J

• 66,000 J

Tags

NGSS.HS-PS3-1

How many Joules of energy are required to change 10 gram of water from 20 C to 90 C? The specific heat of water is 4.18 J/(g · ºC).

• 1400 J

• 2800 J

• 210,000 J

• 1,400,000 J

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-4

How do you find  $\Delta T$  ?

• T(final) - T (initial)

• T (initial) - T (final)

Tags

NGSS.MS-PS3-4

NGSS.MS-PS1-4