Static Quiz Flashcards
(19 cards)
What is electricity
Electricity is generated from the motion of tiny charged atomic particles called electrons and protons
Electrons
Negative electrical charge
Protons
Positive electrical charge
Protons + Electrons=
Crate an electrical force
Like charges produce
Repulsive forces
Repulsive forces
They repel each other (electron +electron or proton + proton repel each other)
Neutron
Neutral atom
Unlike charges produce
Attractive forces
Attractive forces
Attract each other (electron +proton attract each other)
Why is a neutral atom neutral
A neutral atom has no net charge because the numbers of electrons and protons are balanced
Cation
Positive ion
Anion
Negative ion
What makes a positive ion positive
Removing an electron produces a net positive charge;the charges atom is called a positive ion (cation)
What makes a negative ion negative
The addition of an electron produces a net negative charge and a negative ion (anion(
What is static electricity
When two objects rub against each other, electrons transfer and build up on an object causing it to have a different charge from its surroundings
Electron affinity
The tendency of a substance to hold on to electrons is called electron affinity
What is an electrical conductor
Materials that can move electrons easily
Good conductors include metal. Copper is the best
What is an electrical noncondutor
Insulator -materials that do not move electrons easily. Ex. Wood and rubber
Semi conductor
Semi conductors are materials that sometimes behave as conductors and sometimes behaviours insulators. Examples are silicone,arsenic and Germainium
