The Mole How We Count Atoms and Other Fundamental Particles.

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Using Moles to Count Atoms

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Presentation transcript:

The Mole How We Count Atoms and Other Fundamental Particles

The Mole

The Mole = SI Unit for amount of a substance. Defined as the amount of a substance that has as many particles as exactly 12 g of Carbon-12. Avagadro’s Number = Number of particles in one mole of a pure substance = 6.02 x Molar Mass = Mass of one mole of a substance. Equal to average atomic mass expressed in units of _g_ mol Uses = Because elements combine in whole-number ratios of particles, it’s useful to be able know how many particles you have of each reactant & product.

The Mole The Mole = SI Unit for amount of a substance. Defined as the amount of a substance that has as many particles as exactly 12 g of Carbon-12. Avagadro’s Number = Number of particles in one mole of a pure substance = 6.02 x Molar Mass = Mass of one mole of a substance. Equal to average atomic mass expressed in units of _g_ mol Uses = Because elements combine in whole-number ratios of particles, it’s useful to be able know how many particles you have of each reactant & product

The Mole The Mole = SI Unit for amount of a substance. Defined as the amount of a substance that has as many particles as exactly 12 g of Carbon-12. Avagadro’s Number = Number of particles in one mole of a pure substance = 6.02 x Molar Mass = Mass of one mole of a substance. Equal to average atomic mass expressed in units of _g_ mol Uses = Because elements combine in whole-number ratios of particles, it’s useful to be able know how many particles you have of each reactant & product.

The Mole The Mole = SI Unit for amount of a substance. Defined as the amount of a substance that has as many particles as exactly 12 g of Carbon-12. Avagadro’s Number = Number of particles in one mole of a pure substance = 6.02 x Molar Mass = Mass of one mole of a substance. Equal to average atomic mass expressed in units of _g_ mol Uses = Because chemicals combine in whole-number ratios of particles, it’s useful to be able to know how many particles you have of each reactant and product.