Chapter 5 Lesson 1

Question 1

What is temperature?

Answer 1

Temperature is the measure of the average kinetic energy of the particles/atoms

Question 2

What is thermal energy?

Answer 2

Thermal energy is the sum of the kinetic energy and potential energy of all the particles in an object.

Question 3

What is heat?

Answer 3

Heat is the energy transferred between objects/areas due to temperature differences between those objects/areas.

Question 4

What is specific heat?

Answer 4

Specific heat is the amount of energy needed to change the temperature of 1 Kg of a substance by
1°C

Question 5

Kinetic energy is the energy an object has due to its ______

Answer 5

motion

Question 6

List the kinetic theory of matter

Answer 6

1) All matter is composed of small particles called atoms
2) The atoms in matter are in constant, random motion
3) The atoms in matter are colliding into one another transferring energy

Question 7

The Kinetic Theory of Matter is an explanation of how atoms in matter…

Answer 7

move/act/behave

Question 8

How do you convert Celsius to Kelvin?

Answer 8

add 273

Question 9

What should you not do when describing temperature?

Answer 9

say hot and cold

Question 10

A substance’s _____ changes when the substance absorbs thermal energy

Answer 10

temperature

Question 11

The amount of temperature change in a substance depends on ___, ___, and ___

Answer 11

the amount of thermal energy absorbed
the mass of the substance
the type of substance

Question 12

Absolute zero is a ___ temperature at which…

Answer 12

theoretical
all particle/atomic motion in matter would stop

Question 13

Absolute zero is the…

Answer 13

lowest temperature on the Kelvin scale

Question 14

What is the temperature of absolute zero

Answer 14

0 K or -273°C

Question 15

Thermal energy of an object depends on…

Answer 15

temperature of the object
mass of the object
type of material that composes object

Question 16

Thermal energy can be transferred from one object/area to another by…

Answer 16

conduction
convection
radiation

Question 17

What is the formula for the Change in Thermal Energy

Answer 17

△Q= m (Tf - Ti) x C
Change in thermal energy = mass (change in temp) x specific heat

Question 18

What is the unit for change in thermal energy

Answer 18

J

Question 19

What is the unit for specific heat

Answer 19

J/Kg x °C

Question 20

Heat is often described as the movement of ___

Answer 20

thermal energy

Question 21

___ moves spontaneously from high temperatures to low temperatures

Answer 21

heat

Question 22

What is specific heat also referred to as?

Answer 22

specific heat capacity
heat capacity

Question 23

How do you determine the specific heat of a material?

Answer 23

a calorimeter

Question 24

Why does the specific heat of different substances vary?

Answer 24

if the bonds between atoms are stronger, it will require more energy to heat up the substance

Question 25

a coolant is a substance that…

Answer 25

can absorb a lot of thermal energy with little change in temperature

Question 26

What is an example of a good coolant?

Answer 26

water

Question 27

A calorie is a unit used to express ___ or ___

Answer 27

energy or heat

Question 28

How many J is 1 calorie?

Answer 28

4184J