14-1

Question 1

The particles that make up matter are in …..

Answer 1

Constant motion

Question 2

What is temperature the measure of?

Answer 2

average kinetic energy of a group of particles

Question 3

The faster the particles move..
(5)

Answer 3

-The more kinetic energy they have
-higher their temperature
-Takes up more (space) volume
- Expands
-Moves farther apart

Question 4

The slower the particles move…
(5)

Answer 4

-the less kinetic energy they have
-the lesser their temperature
-takes up less volume (space)
-Contracts
-moves closer together

Question 5

What is temperature measured by?

Answer 5

Thermometer

Question 6

How do bulb thermometer work?

Answer 6

the liquid expands in volume with increased temperature

Question 7

What happens when the liquid in a bulb thermometer expands ?

Answer 7

it drives the liquid higher in the thermometer

Question 8

What happens to the liquid when the thermometer cools?

Answer 8

the liquid contracts and drops lower in the thermometer

Question 9

Why do thermometers have scales?

Answer 9

to enable the measurement and comparison of temperatures

Question 10

What are the three major temperatures scales in use today?

Answer 10

Fahrenheit, Celsius, and Kelvin

Question 11

Where is Fahrenheit scale used?

Answer 11

Widely used in the United States

Question 12

Where is the Celsius scale used?

Answer 12

Most other parts of the world (not US)

Question 13

Where is the Kelvin scale used?

Answer 13

in physical science

Question 14

Where is the freezing point and the boiling point on the Fahrenheit scale?

Answer 14

freezing point: 32° F
boiling point: 212° F

Question 15

Where is the freezing point and the boiling point on the Celsius scale?

Answer 15

freezing point: 0° C
boiling point: 100 ° C

Question 16

Where is the freezing point and the boiling point on the Kelvin scale?

Answer 16

freezing point: 273 K
boiling point: 373 K

Question 17

Each Celsius degree is _____ than each Fahrenheit degree

Answer 17

larger; and the scales start on different number

Question 18

What is common about Celsius and Kelvin?

Answer 18

They are the same size; but start on different numbers

Question 19

How do you find Fahrenheit when you only have the temperature in Celsius?
(Formula)

Answer 19

F= (9/5)C +32

Question 20

How do you find Celsius when you only have the temperature in Fahrenheit
(Formula)

Answer 20

C= (5/9)(F-32)

Question 21

How do you find Kelvin when you only have the temperature in Celsius?
(Formula)

Answer 21

K= C +273

Question 22

How do you find Celsius when you only have the temperature in Kelvin?
(Formula)

Answer 22

C= K- 273

Question 23

Is their a temperature where molecular motion theoretically stops?

Answer 23

YES

Question 24

What is the temperature called that’s molecular motion theoretically stops

Answer 24

Absolute Zero

Question 25

What is the lowest temperature called?

Answer 25

Absolute Zero

Question 26

What is Absolute Zero in Kelvin and Celsius and Fahrenheit?

Answer 26

0 K ; - 273° C; -460°F

Question 27

What is Thermal energy?

Answer 27

The total internal energy; sum of kinetic and potential energies

Question 28

Why does a swimming pool have a higher thermal energy than a pot of boiling water?

Answer 28

The pool has a larger mass of particles, as the thermal energy is the total

Question 29

Thermal energy that is being transferred from warm substances to cooler substances is called what

Answer 29

heat

Question 30

What is heat measured in, and why?

Answer 30

heat is measured in Joules or calories because it is a form of energy or energy transfer

Question 31

What is 1 calorie defined as?

Answer 31

the amount of energy required to raise the temperature of 1 gram of water 1 Celsius of water

Question 32

Can some substances absorb heat better than others?

Answer 32

YES

Question 33

What is the ability for a substance to absorb heat called?

Answer 33

specific heat

Question 34

The specific heat of water is...

Answer 34

1 cal/ g° C

Question 35

What do substances with higher specific heat require?

Answer 35

greater energy to achieve equivalent temperature increases by mass

Question 36

What are the devices called that measure changes in heat called?

Answer 36

calorimeters

Question 37

How do calorimeters work?

Answer 37

on the idea that heat is lost by one substance is gained by another

Question 38

Heat lost or gained theorem

Answer 38

Heat lost or gained= specific heat x mass x temperature change (Q= cmΔT)

Question 39

What is the energy stored in foods measured in?

Answer 39

Calories

Question 40

1 Food Calorie equals how many scientific calories?

Answer 40

1 Food Calorie = 1000 calories

Question 41

How do you differentiate standard calories to food Calories?

Answer 41

Food Calories usually have a capital "C" and standard calories have a lowercase "c"

Question 42

What the two ways specific heat can be defined as?

Answer 42

-The specific heat of a substance is the number of Joules of energy required to raise the temperature of 1 kilogram of the substance 1 kelvin. -Specific heat can also be defined as the number of calories required to raise the temperature of 1 gram of the substance 1 degree Celsius