In O Level Chemistry as well as other major Chemistry Examinations such as ICGSE Chemistry, IB Chemistry and IP Chemistry, and A Levels, we have always encounter LIMESTONE – which is essentially Calcium Carbonate CaCO3(s) in the chemical terms.
Do you know we have many natural occurrence of Calcium Carbonate around us?
This picture was taken 3 years ago when i was on holiday in Melbourne, Australia. And the background is the world famous “The Great Ocean Road”. It is a 243 km stretch of road along the south-eastern coast of Australia and provides some of the most scenic coastline in the world, because of its striking and dramatic natural limestone and sandstone rock formations. These formations have been created by erosion from waves and rain and include Loch Ard Gorge, the Grotto, London Bridge (renamed to London Arch after the ‘bridge’ partly collapsed), and most famously the Twelve Apostles (yeah, can you see those spikes formation in the background? It used to be 12th of them, but when i took this photo, there were only 11 left! hmm..wonder how many left now?)
Another Limestone formation – called the “Elephant Rock”
Interesting isn’t it? There are indeed many things (living and non-living things) that are related to Chemistry Theories and Reactions.
Now, as usual, my style! You have seen the nice nice photos and how chemistry is related to our everyday lives (i call it “Chemistry Phenomenon“). TIME to put on your thinking caps to solve some question.
Question:
(i) What will you get when you heat a beaker of Limestone?
(ii) What will you observe?
PS: Leave your suggested answers in “Leave A Reply” below.
PPS: Anyone here from Melbourne or Australia? I would love to hear from you. =)