The main investigation this term in Room 7 is on the 3 states of matter. We have been learning, or will be learning about:- What the 3 states of matter are;
- what makes them different;
- what can make one type of matter change into another type of matter;
- what types of reactions are temporary (physical change) or permanent (chemical change)
Recently we explored how solids and liquids can interact, cause a reaction and change into a gas. We discovered that this sort of reaction is permanent (it can't change back) so it is called a 'chemical reaction'.
After we repeated the 'demonstration', we made a modification to the original experiment, made a hypothesis on what we think would happen, and conducted an experiment to find out what effect our changes would make.
We learned that to make this type of chemical reaction, we need to mix an acid with a soda (carbonate). The chemical reaction releases the Carbon Dioxide ( CO2) that was inside the soda. 
The released CO2 made the balloons inflate!
1 comment:
Hi Room 7
Your experiments on the 3 states of matter are fantastic! I have shown your posting to some scientists in the chemistry labs up here at Victoria University and they are VERY IMPRESSED with your work on the difference between physical and chemical changes. Two of the professors hope that some of you might think about studying chemistry or physics at college or university when you are older!
Mrs Ryan
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