Particle Theory & States of matter

What is thermal expansion? Explain with an example

Write two differences between boiling point and melting point.

The decrease in the volume of a substance as its temperature decreases is called (a)  

The changing of state from gas to solid is called....

• Condensation

• Deposition

• Evaporation

• Realisation

An example of a solid is: (Bonus points for creativity)

Which state of matter has molecules that slide past each other but stay close together? They do not form a regular pattern.

• solid
• liquid
• gas

The process where a gas turns to a liquid is:

• Condensation

• Sublimation

• Rectification

• Absorption

Which of the following temperature values is likely going to make the particles of a water to move very slowly? All the numbers given are in degrees celicious.

• 10

• 13

• 16

• 19

An object _______ when it changes from a solid to a liquid.

• Flies

• Melts

• Goes home

• Floats

Which description best matches this particle model?

• Closely packed and can't move a lot. 
• Particles are close together but can move a little. 
• Particles have lots of energy and can move around.