On 10/5/18 we went up to the Secondary to do Chemical experiments with Mr MacInnes, he showed us 6 experiments.

The first experiment Mr Macinnes had put Mari’s brown hair in a small jar. Then he poured hydrogen peroxide, after a while it would turn the hair blonde.

Next he showed us how he made elephant toothpaste. Elephant toothpaste  is a chemical mix of hydrogen peroxide, food colouring and yeast. It wasn’t so fast because Mr MacInnes had the hydrogen peroxide in the fridge before hand.

The next experiment Mr Macinnes put copper liquid, which is blue, in 4 jars with some chemicals we mixed them together and they gave off heat. we left them for a bit and they turned grey then clear.

Right after that, he showed us a experiment that was called exploding custard where Mr MacInnes put a candle in a tin of empty coffee then added custard powder, he lit the candle and one of the members of our class blew into a pipe connected to the tin. The custard blew  up and the lid came flying off, it made a loud bang sound.

Then he showed us and experiment using petrol and oxygen. He put petrol in a small beaker then blew some oxygen into the beaker. He then put a 2p coin on the to of the beaker and connected a spark to the beaker and the 2p coin flew off. He told us that explosion happens in a cars engine 12,000 times a minute.

Finally he showed us the bottle rocket he filled the rocket with 2 parts hydrogen 1 part oxygen then he lit the lid of the rocket and BANG! It flew into a wall like a real rocket! He then told us that the bang happens in a regular rocket.

We really enjoyed our time over in the secondary and we loved seeing all the experiments.