00:01
Let's start by defining some terms.
00:02
Let's start with element.
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Element is a pure substance that cannot be broken down into different components with normal chemical means.
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For example, carbon is an element.
00:35
You cannot take carbon and break that down into other substances.
00:40
So it's a pure substance that cannot be further broken down by normal chemical.
00:44
Means.
00:46
Isotopes are variants of elements.
00:57
For example, you have hydrogen, hydrogen two, which is also called deuterium, and hydrogen three, which is called tritium.
01:24
These variants of this element hydrogen differ in the number of neutrons, but they have the same number of of protons in the nucleus.
01:44
Polar molecules...