A Student Shines at the Halfway Point

Yesterday I set 9PLa and 9RTd an assessment as we are now halfway through the Chemical Reactions unit. 

Students chose whether they would like to work on paper, Google Presentations, Wix websites or Prezi. Most students chose to make a Google Presentation or Prezi, 2 students chose Wix websites and there are a few working on posters.

I set out Achieved, Merit and Excellence criteria, and students chose which grade they would like to aim for and got to work!

One student went home and kept working on their project, and here are some screenshots of her beautiful presentation, handed in days early and to a very high standard! Check them out below:

Here is the Achievement Criteria; what is the highest grade she met all the criteria for?

Achieved

1. Include a safety slide at the start of your prezi. It must have information about:
1. safety around acids and
2. safety around bunsen burners.
2. Include a slide with a definition of a chemical reaction. This slide must:
1. be written in your own words
3. Include a slide that explains the difference between physical and chemical changes. This slide must include:
1. Whether or not a new substance is made
2. Whether or not the change is reversible
3. What you might observe (see) during a chemical change
4. What you might observe (see) during a physical change
4. Include a slide about 2 chemical reactions we have done at class, or others you do all the time at home.
1. You may or may not want to include photos or videos from class
5. Include a slide about the chemical change that happens when a potato is cooked
1. Identify the reactants and the products

Merit

1. Same as Achieved
2. Same as Achieved
3. Same as Achieved
4. Include a slide about 2 chemical reactions we have done at class, or others you do all the time at home.
1. You may or may not want to include photos or videos from class
2. Explain how you knew they were chemical or physical
5. Include a slide about the chemical change that happens when a potato is cooked
1. Identify the reactants and the products
2. Explain how you tested whether there had been a chemical change

Excellence

1. Same as Achieved
2. Same as Achieved
3. Same as Achieved
4. Include a slide about three chemical reactions we have done at class, or others you do all the time at home.
1. You may or may not want to include photos or videos from class
2. Explain how you knew they were chemical or physical
5. Include a slide about the chemical change that happens when a potato is cooked
1. Identify the reactants and the products
2. Explain how you tested whether there had been a chemical change
6. Include a slide about the chemical reaction between iodine and starch
1. Identify the reactants and the products
2. Explain what is happening during the reaction
3. Discuss how you could use iodine to test another food; write a hypothesis of what you think would happen and a method of how you would test it.  

Back with a bang!

9PTt has just started their Chemical Reactions unit, and I showed them an impressive and scary (for me to light) chemical reaction. It takes place in a ground flask, with the class lights turned off for maximum effect!

1 tsp boric acid + 100mL methanol --> thimethyl borate

The boric acid and the methanol react together to produce trimethyl borate, which produces a beautiful green flame when it is lit on fire.

Reactant + Reactant --> Product

Katherine and Caroline were kind enough to film the experiment for their class.