Past mistakes Flashcards
What is a solution of accurately known concentration?
Standard solution
How to prepare a dry sample of a substance
1) filtration
2) Heat up the substance to evaporate liquid.
What is an electrolyte?
An electrically conducting ionic solution
Exothermic reaction
A reaction that releases heat energy
Homologous series
A group of compounds with similar chemical properties that can be represented by a general formula.
What are alcohols?
Have the functional group -OH
Represented by formula CnH2n+1OH
How are drinks with a low alcohol content made?
Fermentation
How are drinks with a higher alcohol content made?
Distillation (separating alcohol from water)
What is the -OH functional group called?
Hydroxyl
What is the functional group -COOH called?
Carboxyl
What are Carboxylic acids?
Contain functional group -COOH (always at end)
Names end in “oic acid”
General formula CnH2n+1COOH
What is produced when a metal reacts with water?
A metal hydroxide and hydrogen
What is the salt produced from a neutralisation reaction involving a carboxylic acid?
Ends in “anoate”
What is produced when a metal reacts with an acid?
A Salt and hydrogen
What is produced when a metal reacts with oxygen?
Metal oxide