Today the children chose to do two different science experiments. The first one was called The underwater volcano experiment. For the first experience we used water, food colouring oil and an effervescent tablet. The children were able to follow my step by step instructions and used their critical thinking and problem solving skills to guess what was going to happen in the experiment. We measured out the exact amounts off water and oil using our measuring beakers and counted five drops of food colouring into the measuring beaker. 
I explained how the effervescent tablet produced a large amount of carbon dioxide when it met the water the carbon dioxide then takes the coloured water out of the oil and water layer and creates an explosion.
”That’s cool, it’s gone bubbly” “ The oil and the water haven’t mixed” “I wonder what will happen when I shake it, oh the bubbles go away”
The second experiment we did was called sugar water rainbows. It didn’t go quite to plan as we didn’t really have a rainbow at the end though the children still enjoyed doing it and we can always try it again.
For this experiment we used sugar, water and food colouring again the children measured out their ingredients, the idea behind this experiment is to learn a little about different densities the colours that have more sugar in them will sink to the bottom of the beaker.
“ I’m measuring 40 ml of sugar into my cup”
” I have only to put 10ml of sugar in mine”
“ I’m squirting in one drop of colouring, I want red, I like using the dropper”
“ I need blue for mine it’s my favourite colour, I have blue in my hoodie”
“look the sugar has sank to the bottom, it’s blue at the top”
Great team work everyone.
I wonder what experiments we will choose to do next maybe colour mixing? If anyone has any other suggestions, we would love to hear them!
