Free Printable Intro to Thermochemistry and q=mcAT

Worksheets

Intro to Thermochemistry and q=mcAT

Total questions: 32

Worksheet time: 2hrs 50mins

Name

Class

Date

The ability to do work is

force

mass

energy

momentum

Heat is measured in

joules

grams

degrees celcius

Temperature is a measure of the...

total energy in a substance

total kinetic energy in a substance

average potential energy in a substance

average kinetic energy of molecules in a substance

A slower particle has a lower energy than an identical, faster particle.

True

False

The transfer of thermal energy between objects of different temperatures is called...

temperature

heat

internal energy

none of these

Thermal energy always moves:

From a high temperature object to a lower temperature object.

From a lower temperature object to a higher temperature object.

From an object with lower kinetic energy to an object with higher kinetic energy.

From an object of higher mass to an object of lower mass.

Define the law of conservation of energy?

Energy can take different forms but cannot be created or destroyed

Energy takes one form when it is created or destroyed

Energy can take different forms when it is created or destroyed

Energy takes one form but cannot be created or destroyed

What is kinetic energy?

stored energy

energy of motion

energy of friction

energy stored in chemical bonds

What is the kinetic energy of a ball sitting on top of a hill?

0 J

less than 0 J

more than 0 J

10.

The Law of Conservation of Energy states that total amount of energy in a closed system will always

stay the same

increase

decrease

cannot be determined

11.

What is being transferred as you do work?

Energy

Heat

Power

Gravitational Potential Energy

12.

Energy stored because of gravity is a type of:

Potential Energy

Kinetic Energy

Thermal Energy

Chemical Energy

13.

Which of the following is an example of chemical energy being changed into kinetic energy?

Digested food giving you energy to jump.

A battery giving a flashlight energy to light up.

A hand hitting a drum making music.

Two liquids mixed together and get hot.

14.

Why does a battery stop working?

All of its energy is destroyed.

It has transformed its energy into other types of energy.

It is too old.

15.

Thermal energy and temperature are the same.

True

False

16.

_________ is the amount of energy required to raise the temperature of 1 ram of a substance by 1 degree K or C.

thermal energy

specific heat

thermostat

temperature

17.

Temperature is the __________ _________ energy of moving particles

average potential

average kinetic

total potential

total kinetic

18.

Hot things have ____________ thermal energy than cold things

less

same

potato

19.

Cold things often have a _________ kinetic energy because_______

lower; particles are moving around less

lower; particles are moving around more

higher; particles are moving around the same

higher; particles do not move

20.

For objects that have the SAME mass, which object will have a HIGHER thermal energy?

the object with the higher temperature

the object with the lower temperature

the objects will have the same temperature

the objects have no temperature

21.

Dribbling a basketball is an example of

potential energy

stored energy

temperature

kinetic energy

22.

As temperature increases, molecules _____________

move slower

move the same

move faster

stop moving

23.

Convert

100^oC

to Kelvin

$373\ K$

$273\ K$

$212\ K$

$0\ K$

24.

Convert

450\ K

to Celsius

$723^oC$

$277^oC$

$177\ ^oC$

$623^oC$

25.

Convert

300\ K

to Celsius

$573^oC$

$37^oC$

$27^oC$

$600^oC$

26.

Convert

0^oC

to Kelvin

$-273\ K$

$273\ K$

$32\ K$

$-32\ K$

27.

Convert

0\ K

to Celsius

$273^oC$

$-273^oC$

$32^oC$

$-32^oC$

28.

(a) J of heat is released by a 2.35g piece of copper whose temperature falls from 35.0C to -10.0C. The specific heat capacity of copper is 0.385 J/g °C. Type the answer with the correct number of sigfigs.

29.

What was the initial temperature in K of a 5.50g silver ring, if it changed to 45.0C when 50.0J of thermal energy was applied? The specific heat capacity of silver is 0.240 J/gC.

Use correct sigfigs.

(a)

30.

When a 1.35g sample of an unknown liquid cools by 10.0C, it releases 45.0J of energy. What is its specific heat capacity? Use correct sigfigs.

(a)

31.

The temperature of a 30.0g stone rises from 25.0C to 60.0C when 2.60kJ of energy is applied. What is its specific heat capacity? Use correct sigfigs.

(a)

32.

What mass of mercury (Hg) should be used if its temperature is to be raised from 12.3C to 100.C with 234J of heat? The specific heat capacity of mercury is 0.1395 J/gC. Use correct sigfigs.

(a)

100 %

Intro to Thermochemistry and q=mcAT

Total questions: 32

Worksheet time: 2hrs 50mins

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