Lesson 7.6 MC Practice: Heating and Cooling Curve Practice

Which unit is used to express an amount of thermal energy?

• gram

• joule

• mole

• pascal

Tags

NGSS.HS-PS3-4

What equation should be used to calculate the heat of a temperature change?

• q = mH_f

• q = mH_v

• q = mcΔT

NaCl is found at 23°C. Convert this temperature to kelvins.

• -250

• 273

• 296

Which temperature change indicates an increase in the average kinetic energy of the molecules in a sample?

• 15°C to 298 K

• 305 K to 0°C

• 37°C to 273 K

• 355 K to 25°C

Tags

NGSS.HS-PS3-2

What is the amount of heat energy released when 50.0 grams of water is cooled from 20.0°C to 10.0°C?

• 5.00 x 10² J

• 1.67 x 10⁵ J

• 2.09 x 10³ J

• 1.13 x 10⁶ J

Tags

NGSS.HS-PS3-4

The amount of energy needed to change a given mass of ice to water at constant temperature is called the heat of

• condensation

• crystallization

• fusion

• formation

How much heat energy must be absorbed to completely melt 25.0 grams of H₂O(s) at 0°C?

• 13.36 J

• 359 J

• 8350 J

• 56500J

Tags

NGSS.HS-PS3-1

The average kinetic energy of the particles in a sample of matter is expressed as

• density

• volume

• pressure

• temperature

Tags

NGSS.HS-PS1-5

NGSS.HS-PS3-2

Which temperature represents the highest average kinetic energy of the particles in a sample of matter?

• 298 K

• 267 K

• 27°C

• 12°C

Tags

NGSS.HS-PS3-2

A 100.-gram sample of at 22.0°C absorbs 8360 joules of heat. What will be the final temperature of the water?

• 18.3°C

• 20.0°C

• 25.7°C

• 42.0°C

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-4