Carbon Monoxide (2)

Yesterday, I posted some general information about Carbon Monoxide and how it can post dangers to health. Today, I will expand more on how different concentrations of it can effect people. Carbon Monoxide is sometimes called the silent killer. It is colourless, odourless and tasteless and every year kills or injures thousands of people around the world. It enters the body, through the lungs (just like oxygen). Once into the blood it competes with oxygen for haemaglobin. In high concentrations, it can kill in ...

Combustion kept simple

When teaching about combustion, we must remember to consider 'complete' and 'incomplete' combustion. During complete combustion, the fuel will produce CO2 and H2O. Incomplete combustion produces CO or C (soot). A neat way of showing this to your class is to just use a bunsen burner. With the air hole closed, explain that the smoky, yellow flame is caused by incomplete combustion - the soot can be collected by placing a cool beaker of water under the flame. Opening the air hole allows complete ...