Conduction

In Chemistry today we had to make an animation/stop-motion about conduction. It shows conduction by showing the hot particles travelling up the spoon thus making the spoon hot. The heat goes from the element through the cup, heats up the water which then heats up the spoon. Conduction is heat passing through an object.

Chemistry

Intro - This week we are focusing on diffusion and particle theory.
Aim - Investigate if particles diffuse faster in hot or cold water.
Hypothesis- I think they will diffuse faster In hot water because on the video it says they move fast when the particles are heated whereas they slow down when cooled.
Results- My hypothesis was right, the hot water made it spread faster.
Discussion- It happened because the heat makes particles move faster than the cold.

Distilation

Distillation Experiment

 Today in Chemicals science we did an experiment on distillation.
Separating a mixture using Distillation
Aim: To separate a solute from a solvent in a solution using distillation.
Hypothesis : I think that the Coca-Cola will stay the same, and Zero will change. 
Equipment: A solution of different types of cokes, conical flask, heatproof mat, a delivery tube and bung, Bunsen Burner, tripod, gauze mat, retort stand, boss head and clamp, boiling tube. 

Method:

1. Set up the equipment as shown in the diagram.
2. Add approximately 50ml of coke to your conical flask. 
3. Start the element.
4. Heat the solution until most of the solvent has been evaporated. Turn off the element.  

First we set up the equipment we needed. Our group had the Coca-Cola Zero. 

Observation: First the Coke was still and it was just heating up, then it just started to form some little bubbles, it then started to bubble up a lot,  it looked like clear water was being sucked by the delivering tube into the flask. 

Discussion: In the conical flask that had the coke in it, at the bottom there were some sugar left When we heated the Coca-Cola, it evaporated and it got trapped which separated it,  we used ice to cool it down.Our flask had less sugar left over compared to the other group that had the original Coca-Cola that had sugar in it.

But then there was a clear liquid that has been sucked by the delivering tube and I think that it the condensation from the Coca-Cola, I guess there's only one way to find that out, is to look on the ingredients on the Coca Cola bottle. 

Conclusion: This experiment was very interesting but the results were a little shocking,  because I've always thought that the Zero Coca-cola had no sugar in it because it say on the label of the bottle, then doing this experiment shows that there was actually a decent amount of sugar left at the bottom of the flask. 

Evaporation

We have been learning  about evaporation, what evaporation means is when a liquid of some sort by which water changes from a liquid to a gas or vapour. Evaporation is the primary pathway water moves from the liquid state back into the water cycle as atmospheric water vapour.

Aim: Evaporate copper sulfate ( blue liquid) = Solution.

Hypothesis: Gas formed, something will be left behind, 

Equipment: Copper sulfate solution, 250mL Beaker, heat proof mat, evaporating basin, element. 

Method: 

1. Set up element

2. Add 100mL of hot water to the beaker and place on the element.

3. Add copper sulfate to the evaporating basin until it is quarter full.

4. Carefully, place the the evaporating basin on top of the beaker. 

5. Turn on the element to 4.

6. Heat the solution until most of the solvent has been evaporated and crystals of solute are forming. 

7. Turn off the element- careful not to touch as will be hot for a long time.

Oberservations: It slowly started to heat up, there was steam, started to make a powder.

Conclusion: Yes.

Discussion: What happened and why… using your scientific keywords (Evaporating, Solvent, solute, solution, mixture, heat, boil)

Evaluation: This was fun but next time I would only have one thing on the element at a time to make sure it boiled.