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Hello everyone! We are going to begin learning about electricity and inventions.

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Matter and electricity. Remember, matter is anything that has mass and takes up space.

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All matter is made up of microscopic atoms. This means the atoms are very, very small.

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Atoms have a nucleus in the center and electrons that move around the nucleus.

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The nucleus is made up of protons and neutrons.

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Protons have a positive electric charge.

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You can remember this by thinking proton positive.

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Both words begin with the letter P.

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So protons have a positive electric charge.

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Neutrons have no electric charge.

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You can remember this by thinking neutrons, neutral.

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So a nucleus, the nucleus is made up of protons and neutrons.

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Protons have a positive charge.

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Neutrons have no charge.

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Electrons fly around the nucleus.

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Electrons have a negative electric charge.

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Electricity is formed when an electron moves from one atom to another atom.

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Okay, static electricity.

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Static electricity is the movement of electrons between two materials.

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This can happen when we rub them together.

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Electric charges can be positive or negative.

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Objects that are positively charged have more positive charges.

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Objects that are negatively charged have more negative charges.

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Objects that are neutral have an equal number of positive and negative charges.

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Electric forces.

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Charged objects can exhibit attraction or repulsion.

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Objects with opposite charges attract each other.

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So a positive and a negative object will come together.

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They will show attraction.

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You can see in this picture, the positive and negative balls are moving toward each other.

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Repulsion.

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Objects with like charges repel each other.

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So, two objects with positive charges will move away from each other.

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they show repulsion. Objects with two negative charges also show repulsion. So objects with

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like charges show repulsion. Okay, that's all for now. Goodbye!