Heat And Temperature

Question 0

Define characteristics of matter in a solid state

Answer 0

Fixed shape and volume

Particles have rotational and vibrational energy only

Question 1

At what temperature is water most dense

Answer 1

In it’s liquid state at 4 degrees

Question 2

Define the characteristics of matter in a liquid state

Answer 2

Fixed volume
Will fill the containers form that it is placed in
Particles have rotational, vibrational and translational energy
Incompressible

Question 3

What are the characteristics of matter in a gas state

Answer 3

No fixed shape or volume

Particles have rotational, vibrational and translational energy

Question 4

Describe how temperature and Heat are different

Answer 4

Temperature is a property of a material, thus depends on the material
Heat is a form of energy existing all on it’s own

Question 5

What measures the concentration of thermal energy in an object

Answer 5

temperature

The temperature of a material is a measure of the average kinetic energy of the molecules that make up that material

Question 6

What is heat

Answer 6

Heat is a measure of how much thermal energy is transmitted from one body to another
measured in terms of joules measuring the energy transfer

Question 7

Define calorie

Answer 7

A calorie is the amount of heat needed to raise the temperature of one gram of water by one degree Celcius

Question 8

One calorie is equivalent to how many joules?

Answer 8

1 cal = 1g/degree C = 4.19J

Question 9

Define specific heat

Answer 9

specific heat measures how much heat is required to raise the temperature of a certain mass of a given substance by one degree

Question 10

What is specific heat measured in?

Answer 10

J/kg*degree C

Question 11

What does the symbol Q represent?

Answer 11

Heat transfer in Joules

Question 12

What is the formula that expresses the relationship between heat and temperature

Answer 12

Q=mc(T2-T1)
Heat transfer(J) = mass(kg) * specific heat capacity (J/kgC) * change in temp (C)

Question 13

fill in the blanks:

Heat flows spontaneously from a _____ object to a _____ object

Answer 13

Hotter

colder

Question 14

What is it called when two objects of different temperatures are placed in contact and they will displace their heat until they are both at the same temperature

Answer 14

thermal equilibrium

Question 15

What is the difference between heat and temperature?

Answer 15

Heat is a form of energy measured in joules

temperature is relative to matter, it is a property of matter

Question 16

A good absorber of radiant energy is a good ______ of radiant energy

Answer 16

emitter

Question 17

Which cools at a faster rate, a cup of hot tea or a cup of lukewarm tea?

Answer 17

hot tea

Question 18

What is like a check valve?

Answer 18

our atmosphere - it allows short wave energy in which heats up the earth, and the longer waves that are radiated back out are trapped by the ozone, h2o particles and carbon dioxide

Question 19

What is latent heat?

Answer 19

the energy that is given off or absorbed during changes of phases

Question 20

When water freezes energy is ___________(released to/absorbed from) the surroundings

Answer 20

released to

Question 21

When water condenses energy is _________( released to/absorbed from) the surroundings

Answer 21

released to

Question 22

When Ice melts energy is ________ ( released to/absorbed from) the surroundings

Answer 22

absorbed from

Question 23

When water evaporates energy is ________ (released to/absorbed from) the surroundings

Answer 23

absorbed from

Question 24

At higher altitudes the boiling point of water is __________(higher or lower) Why?

Answer 24

There is less pressure due to higher eleveation, therefore more space between molecules of the air, and the water. Due to these conditions, it is easier for water to change phases to give off water as vapor