hannah's physics: 5.7 and 5.8

Instructions for Objective 5.7 and 5.8

1. 5.7 and 5.8 Starter. Find out the names of the processes. Research on the internet if necessary. No need to blog this.

2. 5.7 and 5.8. Forward this e-mail to your blog and type the answers into the e-mail.

3. 5.7 and 5.8 Experiment. I’m afraid you can’t do the expt until we get back but watch the video clip to see how it’s set up and have a look at the graph of the results.

4. 5.7 to 5.10 Plenary 1. Play the attached “States of Matter”

5. 5.7 to 5.10 Plenary 2. Play the attached “Fill the trucks”

6. PhET States of matter simulation - embedding into your Posterous blog. Embed in your blog and then have a play

5.7 and 5.8 Starter

28 October 2011

11:00

· What are the 6 processes shown by the arrows?

5.7 and 5.8

28 October 2011

10:20

· 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) solids keep their shape because the particles are so tightly packed together that they only vibrate in their fixed position. Liquids don’t because they are less packed together because there is more kinetic energy and they are free to move in the shape of their container. Gases have so much kinetic energy that they have no fixed shape and are free to move anywhere.

b) Gases have a lot of kinetic energy, due to heat. This causes the particles to be less dense than liquids or solids and causes them to float and fill their entire container

Q3. Boiling happens when there is high temperatures in a liquid which cause the liquid to have more kinetic energy, evaporation occurs when temperatures go any higher than boiling point, or on the top of the liquid during boiling

· Use following pages from Collins as a resource to help you