Atoms and Electricity

What is Electricity?

Multiple Choice

All matter is made up of...

• Mass

• Volume

• Atoms

​Electron

• ​The electron is most important because it is on the outside of the atom, so it can leave the atom to find a neutral charge.

• ​

• ​The number of electrons compared to protons & neutrons determines if the atom is positive or negative.

Poll

What charge does an atom have if it loses an electron?

• Positive charge

• Negative charge

Multiple Choice

What charge does an atom have if it loses and electron?

• Positive charge

• Negative charge

Multiple Choice

What charge does an electron have if it gains an electron?

• Positive charge

• Negative Charge

​Transferring charge

​If atoms in one material become positive, that means atoms in another material become positive.

This is why duster's work the way they do to attract and keep the dust that is usually just resting on surfaces.

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​Static electricity

• ​Static electricity occurs when there is a build-up of electrons in a material.

• ​Electrons build-up in insulators.

• ​

• When the charged insulator gets close to a conductor, it releases the electrons, causing a shock. ​

Multiple Choice

Electrons build-up in in rubber. This means rubber is what kind of material?

• Conductor

• Insulator

• Transferrer

• Static

Multiple Choice

Hair rises because it has a negative charge when atoms can't leave it. That means hair is what kind of material?

• Conductor

• Insulator

• Transferrer

• Static

Multiple Choice

Electrical wires are made of copper because electrons flow through them well. This means this is what kind of material?

• Conductor

• Insulator

• Trasferrer

• Static

​Opposites attract!

Opposites attract!

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• ​Objects want to become neutral by giving or taking electrons to balance out their charge.

• ​Like charges push each other away. Just like similar magnetic poles push away from each other and opposite magnetic poles attract each other.

Multiple Choice

If an object has a positive charge, what will it attract?

• Negative objects

• Positive objects

• neutral objects