Unit 10.7.3: Oxygen in air
Discussion of the oxygen cycle.
Demonstrate how to stand a birthday candle in a deep petri dish and the basic setup
This could be a virtual experiment or a demonstration
The candle in a measuring cylinder experiment.
The experiment requireds that the students appreciate that the upper section of the measuring cylinder (glass) has no graduation. The students need to design this aspect of the experiment.
This can be used to discuss experimental reliability types and sources of inaccuracy.
The values normally vary between 15 and 25%