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How does a smaller Mr help particles to diffuse faster
A smaller Mr means smaller particles
What is solubility
The ability of a substance to dissolve in a solvent
Solubility equation
Solubility = mass of solid/mass of water x 100
what is solubility measured in ?
g per 100g of water
What is the mass of a neutron, electron and proton ?
Neutron = 1
electron = almost 0
proton = 1
What is a molecule
2 or more atoms bonded together
what does the mass number account for
the number of protons and neutrons in the atoms of a nucleus. - this is where most of the mass of an atom is
what is the atomic number ?
The number of protons
What is an isotope ?
An atom of the same element that has the same number of protons but different numbers of neutrons
What does it mean if a substance is pure ?
A substance is made of one element or compound
What is a chromatogram
A chromatogram is a pattern of spots formed when separating a mixture using chromatography
How is Rf calculated ?
Rf = distance travelled by solute / distance travelled by solvent
