Particle Theory of Matter

Aim: To observe conduction along a metal rod

Method:
 1.Set up and light up a Bunsen burner
 2. Smear a small amount of petroleum jelly on the head on to the head of each drawing pin.
 3. Attach the drawing pins at even intervals along the length of metal rod
 4. C lamp one end of the metal rod to a retort stand.
 5. Position the retort stand so the unclamped end of the metal rod is in the Bunsen burner flame and start the stopwatch
 6. Record the time it takes for each pin to drop the table below

Results:
Discussion:

My group first heated the metal rod then we saw the pins dropping,.The reason why the pins drop down because the particles of the solid(the pins) are vibrating because of the heat that was transferred through the metal rod.Metal is a good thermal conductor.

Social Studies

Marcopper mining disaster.

The Marcopper disaster happened in 1996
1.6 cubic meters filled with mine tailings
A lot of resident were affected


Communism

A theory of System of social organisation in which all property owned by the community and each person contributes and receives according to their ability and needs.Can we think of any communist communities in New Zealand?

1.Where did communism begin.:Russia
2.who was the father of communism:Karl Marx
3.What are the main points
~




For many years communism was the dominant economic system.

Karl Marx and Fredrich Engle.

group of communist(Bolsheviks) started a revolution?

Everything was owned by the goverment

Classless society

piktochart critical literacy

diffusion

Aim: To observe diffusion in a liquid.

Method
1.Half fill your petri dish on your work bench with cold tap water.
2.Place your petri dish on your work bench and allow the water to become settled.
3.Using the tweezers, place a single crystal of potassium permanganate in the centre of the petri dish
4.Observe for 5 minutes.
5.Repeat the experiment using water.
         
Results:
Hot water

Observation:

We first put the solute in the cold solvent then we observe.We saw that it was very slow and it took more then 5 minutes to spread.Then we tried it with hot water and we saw that it spread a lot quicker.So why did hot water spread the potassium permaganate quicker? Because it was hot and the particles were spreading more quickly.

Investigating changes

Aim: to observe water as it changes state from solid to liquid and then to gas.
Method:
 1. Collect enough ice so that your beaker is half full and place the thermometer into it while you set up the rest of the equipment.

 2. Set up the retort stand and clamp alongside the tripod and gauze mat.

 3. Place the beaker of ice on the gauze mat and gently clamp the thermometer so that it is held upright and the scale is easy to see. The bottom of your thermometer should be low enough to still be covered by water when the thin ice melts, but not touching the bottom of the beaker.

 4. Record the initial temperature of the ice into data table below.

 5. Light the Bunsen burner and start timing with the stopwatch.

 6. Measure and record the temperature every minute.

 7. Continue measuring and recording the temperature until the water has been boiling for 2 - 3 minutes.

Results:

Discussion:
We first filled in the beaker with ice then we open the Bunsen burner then we watched how the solid is slowly turning into liquid. The liquids temperature is increasing as it increases the particles of the liquid is separating we can see that steam/gas is evaporating.When it got to a hundred degrees the liquid started boiling and a lot of gas came out.