Delmar's Unit 1 Flashcards
Who first used the terms Positive and Negative for electrical charge?
Benjamin Franklin
What are the three parts of an atom?
Proton, Neutron, and Electron
What is the nucleus made of?
Neutrons and Protons
What is the charge of a proton?
Positive
What is the charge of a neutron?
None
What is the charge of a electron?
Negative
What is the law of attraction?
opposite charges attract and like charges repel
What is another name for an electrons orbit?
Shell
What is the outer shell of an atom called?
Valence shell
How many valence electrons does a conductor have?
1 to 3
What is the maximum number of electrons in a valance shell?
8
What is the bump theory?
Electrical current is created when an electron from one atoms knocks electrons of another atom out of orbit and creates a chain reaction.
How many valence electrons are in an insulator?
7 or 8
How many valence electrons are in a semiconductor?
4
What are the six basic methods for producing electricity?
Magnetism.
Chemical action.
Pressure.
Heat.
Friction.
Light.
What effects can electricity produce?
Magnetism.
Chemical reactions.
Pressure.
Heat.
Light.
What is a photon?
A massless particle of pure energy.
How are photons produced?
Photons can be produced when electrons move from one energy level to another.
