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chemistry igcse acapprinted 15 · PDF 15
145 pagesrevision 46934
printed 15 · PDF 15
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Paper 4 :
Q1 : Define the term Isotope.
Q2 : Magnesium , Calcium and Strontium are Group II metals. Write down the electronic
configuration of Calcium
Q3 : What is meant by the term element?
Q4 : Carbon has 3 isotopes : Carbon-12 , Carbon-13 and Carbon-14. What are the similarities and
differences between all 3 isotopes?
Q5 : How many protons, neutrons and electrons are there in an ion of Copper 64