5.7 and 5.8

What are the 6 processes shown by the arrows?

 

Solid -----> Liquid = Melting             

Liquid----->Gas = evaporation/boiling

Gas-------->Liquid = Condensation

Liquid------> Solid = freezing

Solid -------->Gas = sublimation

 

·         5.7 understand that a substance can change state from solid to liquid by the process of melting

·         5.8 understand that a substance can change state from liquid to gas by the process of evaporation or boiling

·         Questions from Collins p.112

·         Answer in Bullet Points!

Q1 a)solid keeps their shape because all particles are packed tightly

b)solid and liquids have fixed volume because there are still some intermolecular force whereas in gases all the particles are separate

·         Evaporation occurs for a range of temperatures; high temperatures increase evaporation, low temperatures decrease evaporation

·         Boiling occurs when you heat a liquid until the average energy of the particles is great enough for them to turn into a gas.

·         Boiling occurs at a fixed temperature called the boiling point.

Use following pages from Collins as a resource to help you

 

 

5.7 and 5.8 Experiment - Cooling Curve of Stearic Acid using datalogger

15 October 2010

14:34

 

 

states of matter drag and drop plenary.swf Download this file

Fill the trucks - Properties of s,l,g.swf Download this file