A block of ice is placed on a hot sidewalk. The ice melts because

the energy from the sidewalk flows to the ice.

the energy from the ice flows to the sidewalk.

convection currents flow between the ice and the sidewalk

radiation flows between the ice and the sidewalk

The Second Law of Thermodynamics states that:

The entropy of any isolated system always increases

Energy cannot be created or destroyed

The total energy of an isolated system is constant

Heat cannot spontaneously flow from a colder location to a hotter location

The temperature of a glass of cold water will eventually...

Match the temperature of the surrounding environment.

Always be colder than the surrounding environment.

Become warmer than the surrounding environment.

Do molecules generally move faster at 45 C or 106 C?

106 C because molecules have more energy than in 45C

45 C because molecules have more energy than in 106C

106 C because molecules have less energy than in 45C

45C because molecules have less energy than in 106 C

During a sunny day at the beach, how does heat transfer from the sand to your feet?

From the warmer sand to the cooler feet

From the cooler sand to the warmer feet

Heat does not transfer between sand and feet

In a circular motion between the sand and feet

Why does a glass of ice water left on a table demonstrate the concept of thermal energy transfer?

Because thermal energy is transferred from the warmer water to the cooler ice, causing the ice to melt

Because the ice melts, transferring thermal energy to the water

Because the water freezes, transferring thermal energy to the ice

Because thermal energy is transferred from the ice to the water, causing the water to freeze

An ice cube feels cold when we hold it. Which of the following best explains why?

Heat moves from our hands into the ice cube.

Cold moves from our hands into the ice cube.

Heat moves from the ice cube into our hands.

Cold moves from the ice cube into our hands.

A piece of metal is heated, then submerged in cool water. Which statement below describes what happens?

The temperature of the water will increase and the temperature of the metal will decrease.

what happens? a. The temperature of the metal will increase.

The temperature of the water will increase.

The temperature of the water will decrease.

What would likely happen if you were to touch the flask in which an endothermic reaction were occurring?

The flask would probably feel cooler than before the reaction started.

The flask would probably feel warmer than before the reaction started.

The flask would feel the same as before the reaction started.

In an exothermic reaction, the energy stored in the chemical bonds of the reactants is ____.

greater than the energy stored in the bonds of the products

equal to the energy stored in the bonds of the products

less than the energy stored in the bonds of the products

Calorimetry is the measurement of the ___________ (Choose the best answer below.)

transfer of heat into or out of a system (reaction/process)

amount of energy required to raise the temperature of 1 gram of the substance by 1°C.

change in the mass of a substance throughout a reaction.

Thermochemistry Unit Review

Authored by Serena Phillips

Chemistry

10th Grade

NGSS covered

Used 18+ times

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DRAW QUESTION

2 mins • 1 pt

Draw a heating curve. Label the x and y axis

Tags

NGSS.HS-PS3-4

OPEN ENDED QUESTION

45 sec • 1 pt

Which segment on the curve shows melting?

Evaluate responses using AI:

OFF

Answer explanation

BC

OPEN ENDED QUESTION

45 sec • 1 pt

Which segment on the curve shows a liquid being heated?

Evaluate responses using AI:

OFF

Answer explanation

CD

OPEN ENDED QUESTION

45 sec • 1 pt

Which segment on the curve shows vaporization?

Evaluate responses using AI:

OFF

Answer explanation

DE

Tags

NGSS.HS-PS3-4

OPEN ENDED QUESTION

45 sec • 1 pt

Which segment on the curve shows fusion?

Evaluate responses using AI:

OFF

Answer explanation

BC

Tags

NGSS.HS-ESS1-1

NGSS.HS-PS1-8

OPEN ENDED QUESTION

45 sec • 1 pt

Which segment on the curve shows freezing?

Evaluate responses using AI:

OFF

Answer explanation

CB

Tags

NGSS.HS-PS3-2

OPEN ENDED QUESTION

45 sec • 1 pt

Which segment on the curve shows condensation?

Evaluate responses using AI:

OFF

Answer explanation

ED

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Thermochemistry Unit Review

Draw a heating curve. Label the x and y axis

Which segment on the curve shows melting?

BC

Which segment on the curve shows a liquid being heated?

CD

Which segment on the curve shows vaporization?

DE

Which segment on the curve shows fusion?

BC

Which segment on the curve shows freezing?

CB

Which segment on the curve shows condensation?

ED

Which segment on the curve shows a solid being heated?

AB

Which segment on the curve shows a gas being heated?

EF

What is the definition of temperature? How does it relate to particle motion?

Temperature is the average kinetic energy of the particles. It is basically how fast the particles are moving. So at a high temperature particles are moving faster.

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