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Thursday, 3 August 2017

Science!

It's all about the science in Room 11 this week! The teachers can't believe how excited everyone is about the Pukeko Science Fair coming up in Week 9. Our Science Unit this term is all about Chemical Reactions and boy, have we started off with a bang! We've made raisins dance, we've blown up balloons using carbon dioxide and we almost made Miss Chalmers explode when we got 'oobleck' all over the carpet!

At the same time as learning about chemical reactions, we have also been learning about the Scientific Method.

So far we have focused on developing 'hypotheses' which we know is a fancy word for 'predict', which is a fancy word for 'guess'!

Before each experiment we write down a hypothesis, the method for completing the experiment and what equipment we will need. Afterwards we spend time writing down a conclusion to explain scientific reason for the chemical reaction we observed.

Check out the science experiments we have completed so far...

Fizz Balloons

We were very excited to complete our first science experiment for the term - "Fizz Balloons". Who knew it could be so dangerous? We had a couple of balloons pop off the bottle and ping across the room! In this experiment we learnt that vinegar is an acid and baking soda is a base. When they mix together a chemical reaction happens that results in carbon dioxide. The carbon dioxide makes tiny bubbles that make the balloon raise up.





 Bouncing Raisins

This was another baking soda and vinegar experiment but this time we used white vinegar instead of malt vinegar. We loved sniffing the bottle because it smelled like Salt n Vinegar chips! No-one believed Miss Chalmers when she explained that she likes to put vinegar on her fish and chips...yum yum! In this experiment we watched raisins jump and dance in a glass full of warm water, vinegar and baking soda.  We learnt that the carbon dioxide made little bubbles that stuck to the wrinkles of the raisins. The raisins then floated to the surface when they popped! Without the bubbles to keep them afloat, the raisins sunk back down to the bottom only to start the whole process all over again. This experiment was really weird and hardly anyone had a correct hypothesis, including Miss Chalmers! We thought you would need more vinegar and baking soda, but it turns out it's having the correct amount of warm water that makes all the difference. 

'Oobleck'

Yep, this one can get a little messy! For this science experiment our learning was all about States of Matter. We learnt that everything around us is a type of matter that is made up of billions of particles. We also learnt that there are three states of matter - solids, liquids and gases (you can imagine the jokes with THAT one!). After we talked about how an object or substance is either a solid, liquid or gas, Miss Chalmers threw in a curve ball and had us make OOBLECK! Is it a liquid? Is it a solid? Even scientists are stumped on that one!!





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