Posted by Learn Chemistry | Posted in SPM Chemistry , The Structure of Atom
Previously we have gone through the basic concepts of element, compound, atom & molecule at Element VS Compound (click to read, if you havn't). We have seen how fishballs and atoms can be used interchangeably. Now, we continue further with our fishballs story here.
Fishballs are basically a mixture of the flesh of fish, flour, salts and etc.
Atoms have their own ingredients as well. They are made up of protons, electrons & neutrons.
From the diagram above, we can see that protons and neutrons stay close together in the nucleus, while electrons are spinning fast and travel around the nucleus in their own orbitals.
Different fishballs have different flavor, i.e. cheezy, vege, curry, black pepper… Same thing goes with atoms: Different atoms have different amount of protons, electrons and neutrons. For example:
You may ask this question in your mind, “How do we know the exact number of protons, electrons and neutrons for a certain type of element?” In this case, chemists often refer to a chart called PERIODIC TABLE.
In the periodic table, the uranium element is depicted in this way:
Some reference books refer proton number as atomic number & nucleon number as mass number.
The truth is you don't know what is going to happen tomorrow. Life is a crazy ride, and nothing is guaranteed. See the link below for more info.
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