Formulae and equations Flashcards
1
Q
What are the chemical symbols for the first 20 element
A
H, He, Li, Be, B, C, N, O, F, Ne, Na, Mg, Al, Si, P, S, Cl, Ar, K, Ca
2
Q
What is meant by chemical formula
A
Represent compounds or element where more than one atom is bonded together
3
Q
What is empirical formula
A
Simplest whole number ration of atoms in compund
4
Q
What is molecular formula
A
Actual number of atoms in compound
5
Q
What is structural formula
A
Diagram formula
Show what is bonded to what
Not a diagram
6
Q
What is displayed formula
A
2D diagram of atom arrangement
7
Q
State symbols
A
s = Solid
l = Liquid
g = Gas
aq = Aqueous (dissolved in water)
