L Theory Flashcards
Are protons positive or negatively charged
Positive
Are electrons positively or negatively charged
Negative
What holds electrons in orbit of the nucleus
Force of attraction
How does a atom become balanced
Equal number of protons and electrons
What is the outer most shell called
The valence shell
What is a free electron
When a valence electron becomes out of orbit
-this can create electrical flow
Materials that allow electrons out of orbit easily are know as
Conductors
If it’s difficult to force an electron out of orbit the material is an ?
Insulator
When an electron is lost from a atom it’s a
Paotive ion
When a atom gains an electron it’s becomes a
Negative ion
Flow is always
Negative to positive
The flow of electricity is called
Electrical current
In olden days flow was positive to negative it was known as
Conventional current flow
Unit of measurement for current
Ampere (amps) (A)
What is current
“Flow” the amount of Everton’s passing a given point in one second
