the minimum energy required for a reaction to occour
activation energy
1 of 24
different structural modifications of an element
allotrope
2 of 24
the enthalpy change for the breaking of a covalent bond with all species in their gasseous state
bond dissociation enthalpy
3 of 24
a species which contains a carbon atom with a positive charge
carbocation
4 of 24
a substance which alters the rate of reaction without itself becoming consumed
catalyst
5 of 24
the point at which in a reversible reaction, both the forward and backwards reactions happen at the same rate, with the concentration of al products and reactants remaining constant.
chemical equalibrium
6 of 24
a reaction in which the same species is both oxidised and reduced simultaniously
disproportionation
7 of 24
the ability of an atom to attract electron density
electronegativity
8 of 24
the gain of heat by a system; enthalpy change is positive
endothermic
9 of 24
the loss of heat from a system; enthalpy change is negative
exothermic
10 of 24
the amount of heat energy released or absorbed when a chemical or physical change occours at a constant pressure
enthalpy change
11 of 24
the enthalpy change of a reaction depends on the initial and final states of the reaction and is independent of the route by which the reaction occours
hess's law
12 of 24
a system at equalibrium will oppose any change imposed upon it
le chetaliers principle
13 of 24
the process of electron loss
oxidation
14 of 24
the change in concentration of a substance in unit time
rate of reaction
15 of 24
used for reactions that involve both oxidation and reduction.
redox
16 of 24
the process of electron gain
reduction
17 of 24
a reaction which does not go to completion but can occour in either direction
reversible reaction
18 of 24
100kPa and 298K
standard conditions
19 of 24
the enthalpy change when 1 mol of substance is burned completely in oxygen under standard conditions with all reactants and products in their standard states
enthalpy change of combustion
20 of 24
the enthalpy change when 1 mol of substance is formed from its elements under standard conditions with all products and reactants in their standard states
enthalpy change of formation
21 of 24
the normal stable state of an element under standard conditions
standard state
22 of 24
compounds with the same structural formula but with bonds arranged differently in space
stereoisomerism
23 of 24
molecules with at least one carbon-carbon double or triple covalent bond
unsaturated
24 of 24
Other cards in this set
Card 2
Front
different structural modifications of an element
Back
allotrope
Card 3
Front
the enthalpy change for the breaking of a covalent bond with all species in their gasseous state
Back
Card 4
Front
a species which contains a carbon atom with a positive charge
Back
Card 5
Front
a substance which alters the rate of reaction without itself becoming consumed
Comments
No comments have yet been made