This week in SG chem we focused on lots of different things. We started off reviewing things from chem 1 and we whiteboarded different experiments we remember doing. Some of experiments include the popcorn experiment, the mass and volume experiment, and more. We also reviewed different kinds of graphs and particle diagrams and different terms and ideas we remembered (like the conservation of mass, for example). Next, we started talking about matter and how atoms combine to make different kinds of atoms. We did a worksheet and learned all about atoms and elements (and how an atom is part of an element) and molecules and compounds (and how a compound is made up of multiple molecules). We learnt how to tell if something was a compound, a pure element, or mixture just from looking at a picture.
After that, we did another worksheet and practiced identifying compounds, mixtures, and elements.
We talked about salt and water and how things dissolve and how we can separate the liquids in different ways.
We also watched a video about how sugar reacts in different types of liquids (water, alcohol, and then a mixture of water and alcohol) and it was really interesting to see how fast the sugar dissolved in water, but how nothing at all happened when it was in the alcohol. Finally, the last thing we did over the week was learn about Avogadro's hypothesis and we started a worksheet about it, but didn't get a chance to finish.
It was a really fun week and I look forward to learning more and doing more experiments!! :)
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