BCScience9 Ch7 Static Charge + Electric Force

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Static charge is produced by the transfer of electrons.
Mari Chambers
Flashcards by Mari Chambers, updated more than 1 year ago
Mari Chambers
Created by Mari Chambers almost 10 years ago
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Resource summary

Question Answer
Examples of Insulators Acetate, rubber, wool, glass (non-metals)
Examples of conductors Metals
What is a conductor? A material that allows electrons to move freely on and through them
What is an insulator? Materials that do not allow electrons to move easily on or through them
Identify and describe the types of static charges. Negative charge (more electrons than protons), neutral charge (equal electrons and protons), positive charge (more protons than electrons)
How does the amount of charge and distance of separation affect the force between charges? Greater amounts of charges and smaller distances of separation strengthen the force between charges.
How do charged objects interact? Charged objects will either repel (like charges) or attract
What are the three laws of static charge? 1.) Like charges repel 2.) Opposite charges attract 3.) Neutral charges are attracted to either charge
How are static charges distributed on the surface of an object? Electrons are transferred, changing the charge on an object
How can static charge be detected using an electroscope? When a neutral electroscope is charged by a negatively charged rod, electrons are added to the electroscope and spread over the surface of the metal leaves, becoming negatively charged, repelling each other.
Define acetate. A type of plastic used for photographic film and overhead transparencies
Define coulomb A unit used to measure electric charge
Define electron A negatively charged particle found on the outer shell of an atom
Define grounding Electric charge flowing into Earth's surface
Define static charge Electric charge that can be collected and held very nearly fixed in one place
Define Van de Graaff generator A device that uses friction to produce a large static charge on a metal dome
Compare the position of the leaves while a charged object touches the knob of the electroscope with the position of the leaves when the charged object was removed. Touching-leaves repel Removed-leaves did not repel
Give the name and charge of the three particle types in an atom Electron-negative Neutron-neutral Proton-positive
Where are each of the three particles in an atom? The protons and neutrons are located in the nucleus and electrons are located on the outer shell
When is an atom uncharged or neutral? When the amount of protons and electrons is equal
How are solid materials charged? The transfer of electrons
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