Formulae, Equations and Amounts of Substance Flashcards
What is an Element
Pure substance thats consists of one type of an atom that cannot be broken down or made simpler by chemical means
What is water of crystallisation
Water that is chemically bonded within a crystal structure
What is an Ion
A charged particle
What is a Molecular Ion
Two or more atoms covalently bonded with an overall charge
Relative Atomic Mass
Average weighted mean mass of one atom of an element relative to 1/12 of the mass of an atom of carbon-12
Relative Isotopic Mass
Mass of an atom of an isotope of an element relative to 1/12 the mass of an atom of carbon-12
Relative Molecular Mass
Average weighted mean mass of one molecule of a substance relative to 1/12 the mass of an atom of carbon-12
Law of conservation of matter
Elements and their amounts before and after the reaction always remain constant
What is a mole
The amount of that substance which contains the Avogrado number of atoms, molecules or groups of ions
(6.023 x 10^23)
Avogrado Number
6.023 x 10^23
Avogrado Constant
Number of atoms in 12.000g of carbon-12
Molar mass
The mass of one mole of a substance
Avogrado Law
Equal volumes of all gases under the same conditions of temperature and pressure contain the same number of molecules
Relative Formula Mass
Average weighted mean mass of a formula unit relative to 1/12 of the mass of an atom of carbon-12
Definition of Concentration
The amount of substance in a given volume
