3.1 Flashcards
What are the different subatomic particles
Protons neutrons and electrons
Are atoms and molecules Electrically neutral?
YES
What makes a mass of an atom
Proton and neutrons
What is a molecule
2 or more atoms held together by chemical bonds
What is a charged molecule called
Ions
What is a free electron
An electron that has been detached from the atom and is able to move around the structure of the material
What is a semi Conducter
A material whose conductivity is between that of a good conductor and a good insulator
Semi conductors are better conductor at ?
Higher temperature unlike metals that are poorer conductors at higher temperature
What are insulators known as
Known as a non conductor
The lack of free electrons prevents what for insulators
Conduction of electricity
