Quantitative Chemistry Definitions

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  • Created by: i3lena
  • Created on: 09-04-15 22:37
A mole
The amount of a substance which contains the same number of chemical species as there are atoms in exactly 12g of the isotope carbon-12.
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Relative atomic mass
The average mass of an atom of the element, taking into account all its isotopes and their relative abundance, compared to one atom of carbon-12.
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Molar mass
The mass of one mole of a species. It is expressed in g/mol.
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Relative molecular mass
The suym of the relative atomic masses of the atoms in the molecular formula.
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Avogadro's constant
6.02 x10^23
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Empirical formula
Gives the ratio of the atoms of different elements in a compound. It is the molecular formula expressed as its simplest ratio.
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Molecular formula
Shows the actual number of atoms of each element present in a molecule.
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Limiting reagent
The reactant that determines the theoretical yield of product.
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Theoretical yield
The mass or amount of product produced according to the chemical equation assuming 100% reaction.
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Percentage yield formula
Experimental yield / Theoretical yield x100
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Absolute temperature
The temperature of a substance proportional to the average kinetic energy of its particles.
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Absolute zero
0 K; the temperature of minimum kinetic energy.
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STP
Standard temperature and pressure; 273 K and 100 kPa.
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Molar volume of a gas
22.4 dm^3 = n / V
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Avogadro's hypothesis
Equal volumes of different gasses contain equal numbers of particles at the same temperature and pressure.
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Boyle's law
P = 1 / V at constant temperature.
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Other cards in this set

Card 2

Front

The average mass of an atom of the element, taking into account all its isotopes and their relative abundance, compared to one atom of carbon-12.

Back

Relative atomic mass

Card 3

Front

The mass of one mole of a species. It is expressed in g/mol.

Back

Preview of the back of card 3

Card 4

Front

The suym of the relative atomic masses of the atoms in the molecular formula.

Back

Preview of the back of card 4

Card 5

Front

6.02 x10^23

Back

Preview of the back of card 5
View more cards

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