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Unit 8 - Masses and Moles

Across
Mass of pure substance / mass of impure substance
Assumes that there is 100% conversion of reactants to product (answer: mass --> mass problems)
The average mass of naturally occurring atoms of an element
The sum of the relative masses of all the atoms in a molecule
Equals 6.02 x 10^23
Actual Yield / Theoretical Yield
The reactant that is not in excess.
Down
The amount of substance which has the same number of specific particles as there are atoms in exactly 12g of the isotope, carbon-12
The formula showing the number and type of atom of each element in a molecule
A formula showing the simplest whole ratio of atoms or ions in a compound
Found by calculating the percentage by mass of each particular element in a compound
The number of defined particles (atoms, molecules, electrons or ions) in one mole of those particles.
The (mole) ratios of the reactants and products shown in the balanced equation.