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IB Stoichiometry

QuestionAnswer
Element cannot be broken down by any chemical process into simpler substances
Compounds contains more than one element
Empirical Formula the simplest whole number ratio of atoms of each element in a particle of the substance. Obtained by either knowing the mass of each element in the compound or the percentage composition by mass of the compound.
Molecular Formula shows the actual number of atoms of each element in a molecule of the substance. Obtained from the empirical formula if the molar mass of the compound is known.
Structural Formula shows the arrangement of atoms and bonds within a molecule
Avogadro's constant 6.02x10^23 one mole
molar mass the mass of one mole of any substance; symbol M
relative atomic mass weighted mean of all the naturally occurring isotopes of the element
How to calculate from equations: write down correct balanced equation; work out limiting reagent to know the max yield of the products; work out moles of each substance; convert moles into mass or volume
Created by: redhousefarms
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