Thermodynamics

Question 1

What is heat?

Answer 1

Form of energy

Question 2

What is heat measured in?

Answer 2

joules

Question 3

What is temperature measured in?

Answer 3

Celsius

Question 4

T or F: Heating an object up slows down its particles

Answer 4

False

Question 5

T or F: Particles are in constant motion

Answer 5

true

Question 6

Fill in the blank: Kinetic Energy + ____ = Internal Energy

Answer 6

Potential Energy

Question 7

T or F: Metals transfer heat quickly

Answer 7

True

Question 8

Name the 3 variables affecting temperature change

Answer 8

Mass, Material, amount of heat

Question 9

What is 1C in Kelvin?

Answer 9

274K

Question 10

Name the 3 types of heat transfer

Answer 10

Conduction, Convection, Radiation

Question 11

T or F: Convection heat transfer happens through touch

Answer 11

false

Question 12

What are the 2 variables affecting radiation absorbtion

Answer 12

Material, Surface Area

Question 13

What is the main type of radiation?

Answer 13

Infra-red

Question 14

Which type of heat transfer can travel through a vacuum.

Answer 14

Radiation

Question 15

What is Specific Heat Capacity

Answer 15

The amount of energy needed to raise 1kg of material by 1C

Question 16

What does this equation represent? Q=MC△T

Answer 16

Energy in a change of temperature of an object

Question 17

What does Q stand for in: Q=MC△T

Answer 17

Total energy

Question 18

What does △T stand for in: Q=MC△T

Answer 18

Change in temperature

Question 19

What is M measured in for this equation: Q=MC△T

Answer 19

Kilograms

Question 20

What is Heat Capacity measured in for this Equation: Q=MC△T

Answer 20

J/Kg

Question 21

What is Latent Heat?

Answer 21

The amount of energy needed for 1Kg of an object to change state (Gas, Liquid, Solid)

Question 22

T or F: There is no temperature change during a state change (Gas, Liquid, Solid)

Answer 22

True

Question 23

What is the equation for a change in state

Answer 23

E = M*L

Question 24

What is L measured in for this equation: E=M*L

Answer 24

J/Kg

Question 25

What are the 4 factors affecting evapouration

Answer 25

Volatility, Surface Area, Humidity, Air Movement

Question 26

How does Volatility affect rate of Evaporation

Answer 26

The stronger the surface bonds, the lower the rate of evaporation

Question 27

What is the Zeroth Law of Thermodynamics

Answer 27

If 2 different systems are in equilibrium with a 3rd, they are all in equilibrium

Question 28

What is the equation for transference of heat between 2 systems

Answer 28

-Q = Q or -(M*C*△T) = M*C*△T

Question 29

What is a system in relation to thermodynamics

Answer 29

A collection of objects being studied

Question 30

What is the 1st Law of Thermodynamics

Answer 30

△U = Q - W or Change in internal energy equals transferred heat energy minus work energy

Question 31

What does W stand for in this equation: △U = Q - W

Answer 31

'Work' or lost energy