Topic 5 Symbols Formulae And Equations Flashcards
(4 cards)
1
Q
What is an element
A
An element is a substance that consists of only one type of atom and can’t be broken down into anything simpler
2
Q
What is a diatomic molecule
A
Two atoms covalently bonded in a molecule
3
Q
Examples of diatomic elements
A
Hydrogen (H2)
Nitrogen (N2)
Oxygen (02)
4
Q
What is valency
A
The combining power of an atom / ion. The number of electrons a metal has to give away or non metal has to gain to complete full shell
