Quiz Specific Heat

 _?_  is the amount of energy required to raise the temperature of 1 gram of any substance 1^oC.

• Specific heat
• A calorie
• Thermal energy
• Conduction

As 120 g of hot milk cools in a mug, it transfers 20, 000 J of heat to the environment. What is the temperature change of the milk? The specific heat of milk is 2.6 J/g·°C. (Q=mcΔT)

• 64 °C
• 1.56 °C
• 640 °C
• cannot be determined

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-4

How much heat does an aluminum block absorb if 10.00 grams ae heated from 25.0^oC to 50.0^oC? the specific heat of aluminum is 0.900J/g^oC

• 450
• -450
• 225
• -225

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-4

Type of energy that flows from a hot object to a cold object

• a) electrical energy

• b) chemical energy

• c) kinetic energy

• d) heat

The ability to do work

• a) enthalapy

• b) entropy

• c) specific heat

• d) energy

What instrument do we use to measure the average kinetic energy of the particles in a substance?

• speedometer

• calorimeter

• barometer

• thermometer

A 40.2 g sample of a metal is heated to 97.5°C and then placed in a calorimeter containing 120.0 g of water (c = 4.184) at 21.9°C. The final temperature of the water is 24.5°C. Which metal was used?

• Aluminum; (c=0.89)

• Iron; (c=0.45)

• Copper; (c=0.20)

• Lead; (c=0.14)

If a reaction takes place in a beaker and the beaker feels warm, the reaction could be classified as...

• hydrothermic

• exothermic

• endothermic

• geothermic

Why do we use foam cups as calorimeters?

• allows heat to be exchanged with the environment easily

• shields from heat loss and/or gain to the environment

• cheap

• doesn't harm the environment

To fry bacon, a skillet must be heated to 178°C. If the room temperature is 22°C and the pan absorbs 1.58x10⁵ J of heat and the specific heat is 0.450 J/g°C, what is the MASS of the pan?

• 12,700 g

• 2,250 g

• 110,000 g

• 1,970 g