Unit 5 of 10Gatekeeper unitGrade 11
The Mole Concept
Work through these 6 topics in order. Clear the gatekeeper and the rest of the course opens up.
01
Atomic masses and Avogadro's hypothesis
Relative atomic mass and how equal gas volumes reveal atomic masses.
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02
The mole and molar mass
Defining the mole and finding the molar mass of a compound.
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03
Moles, mass, volume and particles
Converting between moles, mass, gas volume at STP and number of particles.
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04
Percentage composition
Finding the mass percent of each element in a compound.
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05
Empirical and molecular formulae
Finding the simplest ratio and then the true molecular formula.
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06
Molar concentration and dilution
Molarity, making up solutions and dilution calculations.
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