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You are given two objects made from different materials. How could you use a pith ball electroscope to learn which material holds on to its electrons more strongly?
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How can materials become electrically charged?
Material can become electrically charged when two different material are brought into close contact, some of the electrons move from one material to another.
How friction can be used to transfer electrons?
When two materials rub together, the loosely held electrons of one material move to the material with the more tightly held electrons.
Why is only a gold leaf used in gold leaf electroscope?
Gold is a very good material for leaf-type electroscope. It is very soft and light and conductive, while being non-corrosive. Other materials can be used but none seem quite as good.
Is a material a good insulator if outer electrons of atoms in the material are free to roam around?
Freely moving electrons make materials more conductive, and less insulating.
What materials allow electricity to flow freely?
Because of freely moving of electrons in the material
How can materials become electrically charged?
Material can become electrically charged when two different material are brought into close contact, some of the electrons move from one material to another.
How friction can be used to transfer electrons?
When two materials rub together, the loosely held electrons of one material move to the material with the more tightly held electrons.
What types of materials conduct heat?
Any material that has free electrons.
Why do materials carry current?
Materials carry current because of the way the electrons of the material behave. Current is proportional to the number of electrons. If the electrons are loosely bound on the material then they are available to carry current along the material. Copper is a common metal who's configuration means that the electrons are loosely bound and as such is very good at carrying current. If on the other hand the electrons are tightly packed into the atoms in the material then they aren't available to carry current. Materials such as glass and plastic are good examples.
Why is only a gold leaf used in gold leaf electroscope?
Gold is a very good material for leaf-type electroscope. It is very soft and light and conductive, while being non-corrosive. Other materials can be used but none seem quite as good.
Why do materials with extra electrons often stick to a material with missing electrons?
The electrostatic force attracts the opposite charges.
How can friction be useful to us?
When two materials rub together, the loosely held electrons of one material move to the material with the more tightly held electrons.
What are heterogeneous material?
heterogeneous materials are materials with different properties....
Is a material a good insulator if outer electrons of atoms in the material are free to roam around?
Freely moving electrons make materials more conductive, and less insulating.
When you make a new material by combining two or more materials will the new material have the same prorities as the original materials or will the properties of the new material be different?
It will have different properties.
What materials allow electricity to flow freely?
Because of freely moving of electrons in the material
Describe why a charged electroscope will discharge when placed near a radioactive material?
1. Electroscopes can be used to detect electronic charges and when a electroscope is given negative charges they repel each other and spread apart. They will remain apart until their electrons have somewhere to go and it combines with positive charges. When nuclear radiation is moving through the air it can remove electrons from some molecules In the air and cause other molecules in the air to gain electrons. - B0N3S
