Today in science year 5 were watching a demonstration called ‘Soda Snake Firework’.
A glass bowl was filled with sand and topped with some baking soda and icing sugar mixed together. Then a bit of Propan-2-ol was drizzled on top of the mixture. After setting it alight the mixture started to caramelise and eventually what looked like a black snake emerged from the bowl.
It did take a few attempts for us to get it right, but we got there in the end!
This afternoon in science Year 5 have been investigating what happens to milk when detergent is added to it.
We started off with a bowl of milk with a few drops of different food colouring scattered around. Then we dipped a cocktail stick into some detergent before sticking it in the centre of our milk. The colours all merged today and swirled around the bowl. It was pretty amazing to watch!
We watched a clip from Harry Potter and the goblet of fire. We saw a green fire.
We wondered if it was possible….
Then Miss Edwards demonstrated a chemical reaction of methanol with Boric acid being lit.
It was amazing to see the flames in a beautiful green colour.
We thought about why it happened and what we learnt.
“I used to think that you needed to use food colouring and now I think it was an acid that made green fire because of the chemical reaction between methanol and Boric acid when it is lit with a flame.”
Year 5 continued their research on famous chemists this afternoon. It was a great chance to make sure they had all the details sorted, ready to present their findings. Some of the scientific words were baffling at first so using a dictionary effectively and efficiently was important.
The children went on to present some of their finding. Our presenting skills are getting better and better.
Today Year 5 were heavily researching some famous chemists. There have been a number of people around the world who have contributed greatly to the world of science. The children spent part of the afternoon finding facts about their chosen person.
There were 4 to chose from:
• Marie Curie
• Jabir Ibn Hayyan
• Linus Pauling
• Fritz Haber
There were some wonderful facts found and the children learnt about some weird and wonderful scientific discoveries:
• Synthetic fertilisers
• Advances used in technology even today, like chemicals used in fluorescent paint!
Well done Year 5, looking forward to what comes next.