Classwork 2/25: Heat Formula

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

• c
• Q
• m
• t

Which of the following is NOT true about heat? 

• Heat moves from hot to cold
• Heat is a form of energy
• Heat cannot be transferred
• Heat makes molecules speed up 

Tags

NGSS.HS-PS3-2

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= 66

• m=200g

  ∆t=124

• m=200

  ∆t=100

• m=200g

  ∆t=76

The specific heat of aluminum is 0.21 J/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 50° to 100°?

• 105 J

• 10.5 J

• 1.05 J

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

• 418 J

• 209 J

• 83 J

• 4.18 J

A 15.75-g piece of iron absorbs 1086.75 joules of heat energy, and its temperature changes from 25°C to 175°C. Calculate the specific heat capacity of iron.

• 0.46 J/g^oC

• 1.654 J/g^oC

• 4.18 J/g^oC

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