The energy needed to remove 1 electron from each atom in one mole of gaseous atoms to form one mole of gaseous 1+ ions ENDOTHERMIC.
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Electron affinity
The energy change per mole to add an electron to a gaseous atom to form a slightly negatively charged ion
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Standard enthalpy of atomisation
The energy change when one mole of gaseous atoms is formed from its elements under standard conditions of 298K and 1atm
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Standard enthalpy of formation
The energy change when one mole of a compound is formed from its elements in their standard states under standard conditions of 298K and 1atm
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Standard enthalpy of combustion
The energy change when one mole of a compound is burnt sufficiently in oxygen under standard conditions of 298K and 1atm
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Lattice energy
The energy change when one mole of an ionic solid is formed from its constituent ions in their gaseous states under standard conditions of 298K and 1atm
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Exothermic
Heat is given out and deltaH is negative as the products are lower than the reactants
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Endothermic
Heat is taken in and deltaH is positive as the products are higher than the reactants
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Energy change
mcdeltaT
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Born haber cycle
Atomisation of the metal, ionisation energy, atomisation of the non metal, electron affinity, lattice energy
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Hess' cycle
The enthalpy change is independent of the route taken
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Isotopes
Atoms of the same element with the same number of protons but different number of neutrons
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Relative atomic mass
The average mass of an atom of an element on a scale where carbon 12 is 12
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Mole
The amount of any substance containing the same number of identical entities as there are in 12g of carbon-12
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Molecule
A group of atoms bonded together by covalent bonds
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Atomic number
Number of protons
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Mass number
Number of protons and neutrons
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Avagadros constant
Number of carbon atoms in exactly 12g of the carbon-12 isotope
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Emperical formula
The simplest ratio of elements in a compound
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Ionic bond
Strong electrostatic force of attraction between positive and negative ions, arranged in a giant lattice
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Covalent bond
Strong electrostatic force of attraction between 2 nuclei and the shared pair of electrons
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Metallic structure
Lattice of positive nuclei in a sea of delocalised electrons
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Hazard
The potential harm caused by a substance or activity
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Risk
The chance of that harm actually being caused by the substance or activity
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Other cards in this set
Card 2
Front
The energy change per mole to add an electron to a gaseous atom to form a slightly negatively charged ion
Back
Electron affinity
Card 3
Front
The energy change when one mole of gaseous atoms is formed from its elements under standard conditions of 298K and 1atm
Back
Card 4
Front
The energy change when one mole of a compound is formed from its elements in their standard states under standard conditions of 298K and 1atm
Back
Card 5
Front
The energy change when one mole of a compound is burnt sufficiently in oxygen under standard conditions of 298K and 1atm
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