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
What is a polymer?
Very large molecules formed by the joining of many small molecules called monomers.
What are the essential elements for healthy plant growth?
Nitrogen, phosphorus and potassium
What is the haber process?
Making ammonia from nitrogen and hydrogen with iron as a catalyst.
What is the Ostwald process?
Oxidising ammonia to make nitric acid.
What does monatomic mean?
Consisting of one atom.
