Chemistry Flashcards
boiling point
The temperature where the vapour pressure of a substance equals the atmospheric pressure
melting point
The temperature at which the solid and liquid phases of a substance are at equilibrium
vapour pressure
The pressure exerted by a vapour at equilibrium with it’s liquid in a closed system
organic molecules
molecules containing carbon atoms
molecular formula
a chemical formula that indicates the element and numbers of each of the atoms in the molecule
hyrdocarbon
organic compounds that consist of hydrogen and carbon atoms only
homologous series
a series of organic compounds that can be described by the same general formula
cracking
the process during which long chain alkanes are broken up into smaller molecules.
activated complex
the unstable transition state from reactants and products
reaction rate
the change in concentration of reactants or products per unit
time
catalyst
a substance that increases the rate of a chemical reaction
without itself undergoing a permanent change
Le Chateliers principle
When the equilibrium in a closed system is disturbed, the
system will re-instate a new equilibrium by favouring the reaction that will oppose the
disturbance
equivalence point of a titration
the point at which the acid/base has
completely reacted with the base/acid
endpoint of a titration
the point where the indicator changes colour
