Today we started to look at the periodic table - the ingredient list of all matter. We looked at how each element consists of a different atom. We explored atoms more and learnt that atoms are different from each other because of the number of protons in each one. Every element has a different number of protons (it is written on the table as the atomic number). Some elements have over 100 protons (most atoms also have the same number of electrons as it has protons). There are still some unknown elements. But scientists already know how many protons they will have because of the place they will have in the periodic table. Currently there are 118 known elements.We looked at how humans have about 40 different types of atoms in their bodies.
We looked at which elements we are familiar with and discussed questions like why steel is not on the table (it is a metal made from a combination of elements).
It was so good to see the curiosity of the students about the atomic world.
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