Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
16 Cards in this Set
- Front
- Back
Mass number
|
Mass number = number of protons + neutrons (in the nucleus/atom)
|
|
Relative atomic mass
|
The mean mass of an atom of an element compared to one twelfth the mass of a 12C atom.
|
|
First ionisation energy |
The energy required to remove 1 (mole) electron(s) from 1 (mole) of atoms in a gaseous state
|
|
Mole
|
The amount of a substance that contains the same number of particles as there are atoms in exactly 12g of 12C.
|
|
Empirical formula
|
A formula which gives the simplest whole number ratio of atoms of each element in a compound.
|
|
Covalent bond
|
A shared pair of electrons.
|
|
Co-ordinate (dative) bond |
A covalent bond in which the shared pair of electrons from an atom |
|
Electronegativity |
The ability of an atom to attract an electron density towards itself in a covalent bond |
|
Atomic radius
|
The distance from the centre of the nucleus to the outer electrons of an atom.
|
|
Structural isomerism
|
Compound which have the same molecular formula but different structures/different structural formulae/different displayed formulae.
|
|
Cracking
|
A process used by the petroleum industry to produce shorter alkanes and alkenes from longer alkanes.
|
|
How to calculate n
|
= m/Mr
|
|
Ideal gas equation
|
pV=nRT (remember to convert units)
|
|
How to calculate concentration
|
C=n/V (remember to divide cm3 by 1000)
|
|
How to calculate atom economy |
= (mass of desired product) x100 /(mass of reactants) |
|
How to calculate percentage yield
|
= actual yield / x 100
theoretical yield |