In this I/GCSE Chemistry blog post, we will be looking at the relationship between air and oxygen, and the necessary experiments we need to learn for the IGCSE syllabus, let's go!
How to determine the amount of oxygen in air
This is one way to determine the amount of oxygen it the air. as the iron rusts it uses up the oxygen pulling the water up the test tube allowing you to see the difference.
Another way is to put phosphorous/ copper in two joined syrings and then the amount of air decreases meaning that it will show you how much oxygen is in the tube
Carbon Dioxide and tests for gases
- Carbon Dioxide:
is a Green house Gas. The increasing amount of Carbon Dioxide in the atmosphere could be leading to climate change.
- To test for
Hydrogen: put a splint in a test tube full of hydrogen and if hydrogen is present it will make a squeaky pop.
- To test for
Oxygen: put a dying splint in a test tube full of Oxygen and if Oxygen is present it will relight the splint.
- To test for
Carbon Dioxide: bubble it into limewater and if it goes cloudy Carbon Dioxide is present.
That is all!
References:
https://getrevising.co.uk/https_proxy/39993