Flashcards in M3.1 Deck (18):
what are the four effects of electricity?
How are the atoms arranged in metals?
Closed packed with a crystal lattice
Why do metals have a good conductivity?
High mobility of its electrons
How many electrons are on the outer shell of a good conductor?
Less than four
How many electrons are in the outer shell of a semi conductor?
What is doping?
Adding other foreign atoms by heat or light?
How many electrons are in the outer shell of an insulator?
More than four
How is matter broken down into atoms?
By use of chemicals
What charge are:
-protons = positive
-electrons = negative
-neutrons = neutral
What is electric current?
The flow of electrons
What is a atoms charge if there is more protons than electrons?
What voltage is needed to remove electrons from an insulator?
More than 3 volts
What voltage is needed to remove electrons from a semi conductor?
Less than 3 volts
What voltage is needed to remove electrons from a conductor?
No voltage required
Are the number of protons in the nucleus the same as the number of electrons?
How is an atom ionised?
By being charged
What is a single charge of a electron?