Y10 revise and review particle model

The internal energy of a substance is made up of these two parts:

• elastic energy and potential energy

• internal energy and vibration energy

• potential energy and kinetic energy

• kinetic energy and elastic energy

When we increase the kinetic energy of particles we also increase their .............?

• mass

• temperature

• size

• area

The temperature at which a substance changes state from a solid to a liquid is called the ...............?

• melting point

• boiling point

• evaporation point

• turning point

During which two sections of the graph does the temperature stay constant? (You must choose two answers)

• A to B

• B to C

• C to D

• D to E

• E to F

Between which two points is iron a solid?

• A to B

• B to C

• C to D

• D to E

• E to F

What state is iron in between C and D?

• solid

• liquid

• gas

• plasma

At what point do the particles have the most kinetic energy?

• A

• C

• D

• F

What is happening at point D?

• The iron has disappeared

• The iron has stopped melting

• The iron is getting colder

• The iron is starting to boil

For a gas to change to a liquid, energy must...

• Increase

• Decrease

• Remain the same

Which of these changes requires an increase in energy?

• Gas to Solid

• Liquid to Solid

• Solid to Liquid

• None of these