Temperature

Question 1

Define temperature

Answer 1

Temperature is a measure of average kinetic energy per molecule in a substance

Question 2

The kinetic theory states that ?

Answer 2

particles are constantly moving and have kinetic energy. The higher the temperature, the faster they move, so the more kinetic energy they contain.

Question 3

How is temperature related to the direction of net thermal energy transfer

Answer 3

Thermal energy flows from an object at high temperature (hotter) to an object at lower temperature (cooler). Particles in the hot object will lose kinetic energy, whereas particles in the cold object will gain energy. Energy will continue to flow until both objects have the same temperature.

Question 4

A temperature scale is a way of expressing the relative ______ and ______ of objects.

Answer 4

hotness

coldness

Question 5

Hotter objects have _____ temperature

Answer 5

higher

Question 6

Celsius scale is a scale based on the properties of _____

Answer 6

water

Question 7

Kelvin scale is based on the _______ of ______ gases and the ______ of particles

Answer 7

properties
ideal
energy

Question 8

What happens at absolute zero?

Answer 8

The particles have zero thermal energy. It is the lowest temperature that is theoretically possible, at which the motion of particles which constitutes heat would be minimal.

Question 9

FORMULA

Temperature in kelvin =

Answer 9

temperature in degrees Celsius + 273

Question 10

FORMULA

Temperature in degrees Celsius =

Answer 10

temperature in kelvin -273

Question 11

THERMOMETRIC PROPERTY AS TEMP. INCREASES

liquid in gas&raquo_space;

Answer 11

volume of liquid increases

Question 12

THERMOMETRIC PROPERTY AS TEMP. INCREASES

constant-pressure gas thermometer

Answer 12

volume of gas increases at constant pressure

Question 13

THERMOMETRIC PROPERTY AS TEMP. INCREASES

constant-volume gas thermometer

Answer 13

pressure of gas increases at constant volume

Question 14

THERMOMETRIC PROPERTY AS TEMP. INCREASES

thermoelectric thermometer (thermocouple)

Answer 14

emf produced varies non-linearly

Question 15

THERMOMETRIC PROPERTY AS TEMP. INCREASES

resistance thermometer

Answer 15

resistance increases

Question 16

THERMOMETRIC PROPERTY AS TEMP. INCREASES

thermistor

Answer 16

resistance usually decreases but increases for some types

Question 17

a property of a material which varies with temperature

Answer 17

thermometric property

Question 18

A _____ thermometer typically has a range from -10C to 110C or 0C to 100C

Answer 18

mercury-in-glass laboratory

Question 19

A _____ thermometer typically has a range from 34C to 43C

Answer 19

clinical

Question 20

A _____ thermometer typically has a range from about -250C to about 1500C

Answer 20

thermoelectric

Question 21

Define upper fixed point

It is ___ *C

Answer 21

the temperature of steam from pure boiling water at standard atmospheric pressure

100

Question 22

Define lower fixed point

It is ___ *C

Answer 22

the temperature of pure melting ice at standard atmospheric pressure

O

Question 23

Differentiate between heat and temperature

Answer 23

Heat describes the transfer of thermal energy between molecules within a system and is measured in joules. On the other hand, Temperature describes the average kinetic energy of molecules within a material or system and is measured in Celsius(*C) or Kelvin (K)

Question 24

When heat energy is added to an object:

The average ______energy of the atoms in the object ________.
The temperature will ______ (with an exception).
The object will _____.
The state of matter may _____.

Answer 24

1. kinetic
2. increases
3. increase
4. expand
5. change

Question 25

A change in temperature can affect the properties of an object. Such as its ___ (4)

Answer 25

Size (expansion/contraction)
State of matter
Electrical resistance
Pressure
Rate of diffusion
Solubility
Rate of reactions