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hello well here we are last units of natural science okay it's called electricity

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electricity is energy that occurs as a result of charged particles but to understand it better

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to understand how it works we need to understand atoms all matter toda la materia is made up of

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atoms. Anything, a book, a computer, the window is made up of a lot of atoms.

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Here you are the atoms. They have a nucleus, you can see, and these blue particles are the

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electrons and they can move outside the atom. We represent them as in your book,

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in red in green and blue let's see in the nucleus there are protons with

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positive electric charge okay positive then also in the nucleus there are

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neutrons with no electric charge and outside in blue the most interesting one

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for these units electrons with a negative electric charge they move

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around the nucleus, all right? They are not in like protons and neutrons. An atom

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is electrically neutral when it has the same number of protons and electrons. If

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it got five protons and five electrons we say it's electrically neutral. But if

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you wrap two objects together, electrons can move from one atom to another, which

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makes the objects electrically charged remember electrons the blue ones outside

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okay this means when an atom gains electrons and have more electrons than

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before and the atom has more electrons than before it becomes negatively

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charged however when an atom loses electrons it becomes positively charged

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Positive and negative charges attract each other, okay, like magnets. Positive

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charges repel all the positive charges, negative charges repel all the negative

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charges. Here you are in the picture, they don't like staying with the same. And, well,

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the charged particles result in electricity. Here we are. To sum up, atoms. We

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gets three types three particles inside the atoms okay all the atoms have

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protons neutrons and electrons protons positive electric charge they attract

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electrons they repel the protons they repel all the protons and they are in

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the nucleus the neutrons no electric charge nothing remember they are in the

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nucleus like the protons and electrons have a negative electric charge they

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protons, they repel other electrons and they are outside the nucleus. Is it clear

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now? Finally, what is electricity again? Electricity is energy that occurs as the

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result of charges particles. I hope you understand good, that's it, so if you have

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any questions always ask and please do your activities to practice better. See

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you soon, goodbye!