Chaos - Fleas and Rats

Last week we started a new focus on a topic which is "The Black Death", we had learnt how this disease spread around the globe and what caused it to become one of the most dangerous disease on Earth. The Black Death came to Europe in 1347 and killed millions, in medieval times places like the houses and towns were not so clean and had poor hygiene which made it easier for the Black Death to spread. It first started in Asia and spread among soldiers, it then travelled across over-seas and popular trading places which then the traders caught the disease making it a whole lot easier for it to spread around the globe. Now how this started was it began from Fleas and Rats, rats were mostly common in middle ages, due to the poor hygiene the rats were everywhere (houses, trading ships, churches, farms, castles & etc). We assume that when fleas bite the rodents and since rodents are in common places like houses it then transfers to humans and much quicker for it to spread.

Black Death Transfer

Dilution - Science

Today in science we did an experiment on the topic Dilution, we had to first learn what dilution is another basic information about it. When doing the experiment we needed to know what was happening, a few things we picked up from previous lessons of science helped because we are able to describe what is happening. This covered what Solute, Solvent & Solution meant, including Dilution. 

Dilute : Making the solvent less concentrated(Weaker)

Solute : The substance being dissolved

Solvent : The liquid that does the dissolving

Solution : The mixture that forms as a result of combining together 

Concentration : A measure of how much solute has been dissolved into the solvent.

Aim : TO MAKE A DILUTION SERIES TO INVESTIGATE CONCENTRATION

Hypothesis: I think that every time we transfer the concentrated liquid to a clear water it will be diluted meaning less concentrated and transferring that to another clear water will make it even more diluted as the one before.

Equipment :

- Potassium Permanganate

- Test Tubes (x6)

- Test Tube Rack

- Measuring Cylinder

- Pipette 

Method:

• Place the six test tubes in a test tube rack. Label the rack with numbers 1 - 6.
• Using the measuring cylinder, fill test tube 1 with 10 mL of water. Fill the remaining test tubes with 5 mL of water.
• Using your tweezers, add a single crystal of potassium permanganate to test tube 1.
• Gently shake the test tube until the crystal has dissolved.
• Using the transfer pipette, carefully remove exactly 5 mL from test tube 1 and pour it into test tube 2.
• Rinse the transfer pipette thoroughly to ensure that no purple solution remains.
• Gently shake test tube 2 and repeat the transfer process, transferring exactly 5 mL of solution from test tube 2 to test tube 3.
• Rinse the pipette again and repeat the transfer process for test tubes 4, 5 and 6.

Review:

Once the results came in we have already noticed that the test tube 1 has a visible colour meaning it isn't diluted yet also meaning that it is highly concentrated with the potassium permanganate particles in the liquid. As we transferred the solution from one test tube to another it became less concentrated, this means that there are less particles also can be told by its colour changing. In my opinion as I said before making the solution transfer to a clear water made the potassium permanganate less concentrated since there was more liquid. It is now very clear that the first test tube is the least diluted meaning it has high concentration and the least concentrated will be the last one which barely has any colour or potassium permanganate in it.

Budgeting Guide - Business Studies

Last week on Friday we have been making a Budgeting Guide, it was mainly to help other people learn about budgeting techniques and key things that they should always keep in mind when budgeting or even buying items or products. This was required to be made differently so I decided to use Canva to make it more creative.

CREDIT: Canva.com

Link to Infographic for better quality: Budget Guide