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Tuesday, April 30, 2019

Aim
Ro observes conduction along a metal rod.

Method

1. set up and light a bunsen burner
2. smear a small amount of petroleum jelly on to the head of each drawing pin.
3. attach the drawing pins at even intervals along the length of the metal rod.
4. Clamp 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 on the table below...

Resalts
pin 1. 12 sec
pin 2. 27 sec
pin 3. 50 sec
pin 4. 1min 49 sec

Explanation
As the mettle rod heated the particles started vibrating more because of the extream heat and that made the heat transfer from 1 place to another causing the pins to drop off.

Wednesday, April 10, 2019

the sinking of the Titanic

Belfast UK 31st of March 1909 the Titanic was under construction it took 2 years to make this 269-meter long ship and took 3000 men to build the Titanic in 2 years. May 31st 1911 it was the day the Titanic was finished and it was the first day the Titanic launched and had 3,547 passengers.  

This is the link to all of the places the Titanic stopped at...

1912 15th of April the day the Titanic hit the iceberg the Titanic was trying to make a compleat turn to miss the iceberg but didn't have enough time to, the Titanic hit the side of the iceberg and making a hole on the side of the Titanic.

After the Titanic collided with the iceberg people moved to the deck of the Titanic to get into the lifeboats but there wore not enough lifeboats to fit everybody. There wore 20 lifeboats and 3,547 passengers and only 706 passengers that survived the sinking of the Titanic.

It took 2 hours to sink this 269-meter longship 1,500 people wore killed due to the sinking of the Titanic the people that survived they wore put on a trial and many people mentioned that there was a fire but the judge…


Tuesday, April 9, 2019

AIM, To observe contraction in the gases...

METHOD, 
1. Set up the bunsen burner underneath a tripod and gauze mat...
2. Pour approximately 50-60 mL of water into your can. It should be no more than 1/4...
3. Heat the can of water until steam is seen escaping from the top... Carefully grip the can with the scissor tongs. Ensure you have a firm hold of the can before lifting it off the glaze mat... 
5. Quick;y, but very carefully, invert the can as you plunge it into a container of water...

Observation, We use a clean can full 1/4 full of water and we heated the water until it started to steam from the top of the can and using scissor tongs we picked up the can and fastly dipped the tip of the can into the cold water and the can implode because of the sudden change of temp...

The can implodes because when the can is plunged into cold water, the water vapour condenses leaving the pressure inside the can much less than the outside.  As the water boils the molecules bouncing off the inside of the can creating a force pressing outwards. The pressure of the atmosphere pressing inwards.


 

Monday, April 1, 2019

Investigating state canges

Aim. To observe water as it changes from a solid to liquid an then to a 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 ice, melts, but not touching the bottom of the beaker...

4. Record the initial temperature of ice in the 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 munites...

diffusion is when particles move from high concentration to low concentration... When we used hot water the process was faster...