Teks 6EFG/7A Review

The amount of heat required to raise the temperature of one gram of a substance by one degree Celsius is ________

• Heat energy
• Specific heat
• convection
• thermal energy

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

• c
• Q
• m
• t

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

• 50°
• 0°
• 100°
• 150°

Tags

NGSS.MS-PS1-4

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=200g
  ∆t= 66
• m=200g
  ∆t=124
• m=200
  ∆t=100
• m=200g
  ∆t=76

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

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

• Q=m x ∆t x c

• Q=mc

• Q= ½mv

• m=QC

20 g of water. specific heat of water is 4.18 J/gŸ°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 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

Specific heat of water is  4.18 J/g°C. Specific heat of wood is 1.760 J/g°C What material needs more heat energy to raise the temperature?

• Water
• Wood
• Both are same

Water molecules have the greatest kinetic energy in
________________

• Ice at 0 °C.
• Water at 373 K.
• Water at 98 °C
• Steam at 150 °C.

Tags

NGSS.HS-PS3-2

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