Chemistry - Moles Flashcards Part 1
It’s a key concept in chemistry for counting particles at the atomic scale. It is named after Amedeo Avogadro, an Italian scientist. Avogadro’s number is 6 × 10²³, which is the number of particles (atoms, molecules, or ions) in one mole of a substance.
What is Avocadro’s number
6X 10 (23)
Key Terms
What is Avocadro’s number
6X 10 (23)
Who is Avogadros number named after
Amedo Avogardo
What is one mole of a substance
The amount of a that substance that contains 6 x 10(23) particles of that substance
What type types of particles define a substance
Atoms and molecules
What is an atom
The smallest part of an element that still has the properties of that element
Molecule
Two or more atoms chemically combined
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| Term | Definition |
|---|---|
What is Avocadro’s number | 6X 10 (23) |
Who is Avogadros number named after | Amedo Avogardo |
What is one mole of a substance | The amount of a that substance that contains 6 x 10(23) particles of that substance |
What type types of particles define a substance | Atoms and molecules |
What is an atom | The smallest part of an element that still has the properties of that element |
Molecule | Two or more atoms chemically combined |
What is a Element | A substance that cannot be chemically broken down further |
Elements are made up of | Atoms |
Compounds are composed of | Molecules |
Mass of 1 mole of an element (6x10(23)) | Relative atomic mass in grams |
How would you calculate the Relative molecular mass of a compound | Add up all the masses of the individual atoms in the molecule/compound |
What is the relative molecular mass | The average mass of one molecule of that compound compared with one twelfth of the mass of the carbon-12 isotope |
To find actual mass | Molar mass x moles |
To find the no of mole from mass | Actual mass /molar mass |
To find number of particles | No of moles x 6 x 10 (23) |
To find number of moles from particles | To find the number of moles from particles, divide the number of particles by Avogadro’s number (6 × 10²³). |