P1.2.2 - Energy And Temperature

Question 1

What is temperature?

Answer 1

It tells you how hot or cold something is

Average kinetic energy of the particles

Question 2

How can you measure temperature?

Answer 2

Thermometer

Temperature sensor

Question 3

What are the units of temperature?

Answer 3

Degree Celsius

Kelvin (K)

Question 4

What is the difference between temperature and energy?

Answer 4

Energy is measured in Joules (J)
Energy depends on the arrangement of particles and how fast they are moving

Temperature tell you the average kinetic energy of the particles

Question 5

What happens when you heat something?

Answer 5

The energy stored within the system changes, increasing the temperature

Produce a change of state (solid to liquid)

Make chemical reactions happen (wood burning)

Question 6

What are changes of state examples of?

Answer 6

Physical changes

Question 7

What are the properties of a physical change?

Answer 7

You do not make new substances

Easy to reverse as the particles are simply rearranged

Question 8

What is a chemical reaction an example of?

Answer 8

Chemical change

Question 9

What are the properties of a chemical change?

Answer 9

Involve changing atoms in different ways

Cannot be easily reversed