Grape indicator - made by Suyeon

Suyeon accepted one of the challenges for the Acids and Alkalis unit and made her own indicator at home. She took photos of each step and presented her work today in the Science lesson. Well done Suyeon!

Step 1 - remove the grape peel from black grapes (the darker the colour, the more dye we can obtain)

Step 2 - cut the peels in small bits, so that we can extract more dye out of them

Step 3 - add hot water and mix well

Step 4 - prepare a filter 

Step 5 - filter the mixture, in order to remove the solid peels from the indicator solution

Step 6 - transfer the indicator extract to a test tube

Step 7 - test the indicator with various substances: vinegar, lemon, green tea

Acids, alkalis and indicators

We have been playing with acids and alkalis for the last two weeks in the Science lessons. We have compared different indicators and most importantly, we checked what's happening when acids neutralise alkalis.

The results are colourful master pieces :)
Enjoy!

Y7 Acids and alkalis challenges

1.  Memrise course for the Acids and Alkalis unit - the more points you get on the course, the more xp you receive :)
2. Make you own indicator: you can use various colored extracts to test the pH (red cabbage juice, black currant juice etc). Can you identify and test out your own indicator?
3. Prepare a pH scale that shows the pH of everyday substances we use like milk, coffee, eggs, bleach etc. Be as creative as possible in displaying the pH and the substance :)
4. Prepare your own revision materials: newsletter articles, posters, presentations etc.

Edible Cells

Year 7 had to prepare cell models... with a twist. The cells could be made only from edible materials. Everybody was free to chose the cell type - as long as the final model would be edible :)

Here are the projects:

Maya used a waffle and a chocolate for a basic animal cell model.

Adam baked a neuron, topped with marzipan

Isaac chose a simple model - an avocado cut in half is similar to a plant cell.

Sean baked an animal cell.

David baked a leaf cell.

Simon brought in some nerves - rather than making individual cells, he thought about bundles of neurons  

Leaf cell made of chocolate and jelly beans - Krystian

White blood cells - Mr. Copil :)

Animal cell cake - with lots of details - by Adam

Luc prepared a plant cell even though he was not in school. Get well soon Luc!

Off course after presenting our mouth watering cells, we took it one step further and had a small feast :)