Quizizz Practice Unit 3 Lesson 5: Heat of Phase Changes

ONE STEP: Calculate the amount of heat needed to melt 18.0 g of ice at 0 ºC. Express your answer in calories. Do NOT include units.

Mathematical Equivalence

ON

ONE STEP: Calculate the amount of heat needed to vaporize 18.0 g of water at 100 ºC. Express your answer in calories. Do NOT include units.

Mathematical Equivalence

OFF

TWO STEPS: Calculate the amount of heat needed to convert 19.0 g of liquid water at 18 ºC to steam at 100. ºC.

Mathematical Equivalence

ON

THREE STEPS: Calculate the amount of heat needed to convert 29.0 g of ice at -18 ºC to water at 10. ºC.

Mathematical Equivalence

ON

THREE STEPS: Calculate the amount of heat needed to convert 16 g of ice at –24 ºC to water at 28 ºC.

Mathematical Equivalence

ON

Convert 35⁰F to Celsius (5/9 x (⁰F - 32))

• 1.6⁰

• 1.7⁰C

• 2.0⁰

• 16.6⁰C

What is the transfer of heat by direct contact?

• Convection
• Electromagnetic waves
• Radiation
• Conduction

A measure of the AVERAGE kinetic energy of the individual particles in an object is called:

• thermal energy
• conduction
• convection
• temperature

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

A chemical reaction that absorbs heat is called a _____________ reaction.

Tags

NGSS.HS-PS1-4

Which of the following is the proper unit for specific heat?

• cal/g^oC

• cal

• g

• ^oC