Well, for today's lesson, we went through worksheets again so as to prepare us for the coming common test and correct the mistakes we had made.
I have learnt that the part of an atom which contains the protons and neutrons is called nucleon. The nucleon is positively charged and is densely concentrated in the centre of an atom.
I have also learnt that atoms usually gain or lose electrons but not the protons and neutrons as the protons and neutrons are found in the inner area of the atom. Thus, the electrons will be easier to be attracted by other atoms than the subatomic particles found in the inner area.
I learnt that the similarity between sulfur molecule and sulfur dioxide molecule is that both molecules are made up of more than one atom. As for their difference is that sulfur molecule contains one type of atoms but sulfur dioxide molecule has more than one type of atoms.
(Example of an atom. Inner part, nucleon - consists of protons and neutrons. Outer part - electrons orbiting in electron shells)
Sources: Google Images
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