CHEMISTRY EXAM PAPER 1
hydrogen ions - CORRECT ANSWER-What are acids in solution a source of?
hydroxide - CORRECT ANSWER-What are alkalis in solution a source of?
7 - CORRECT ANSWER-What is the pH of a neutral solution?
low (less than 7) - CORRECT ANSWER-Do acidic solutions have high or low pH
values?
high (greater than 7) - CORRECT ANSWER-Do alkaline solutions have high or low pH
values?
alkaline - CORRECT ANSWER-Is this solution acidic or alkaline?
acidic - CORRECT ANSWER-Is this solution acidic or alkaline?
red - CORRECT ANSWER-Give the colour of methyl orange indicator when it is put into
an acidic solution
yellow - CORRECT ANSWER-Give the colour of methyl orange indicator when it is put
into an neutral solution
yellow - CORRECT ANSWER-Give the colour of methyl orange indicator when it is put
into an alkaline solution
colourless - CORRECT ANSWER-Give the colour of phenolphthalein indicator when it
is put into an acidic solution
colourless - CORRECT ANSWER-Give the colour of phenolphthalein indicator when it
is put into an neutral solution
pink - CORRECT ANSWER-Give the colour of phenolphthalein indicator when it is put
into an alkaline solution
it decreases - CORRECT ANSWER-What happens to pH when hydrogen ion
concentration increases?
it increases - CORRECT ANSWER-What happens to pH when hydrogen ion
concentration decreases?
it decreases by 1 - CORRECT ANSWER-What happens to pH as hydrogen ion
concentration in a solution increases by a factor of 10?
, a concentrated solution has a higher amount of substance dissolved in the solution -
CORRECT ANSWER-What is the difference between a concentrated and dilute
solution?
one that only partially dissociates into ions - CORRECT ANSWER-What is a weak
acid?
one that fully dissociates into ions - CORRECT ANSWER-What is a strong acid?
any substance that reacts with an acid to form a salt and water only - CORRECT
ANSWER-What is a base?
soluble bases - CORRECT ANSWER-What are alkalis?
salt + hydrogen - CORRECT ANSWER-Complete this equation: acid + metal -->
salt + water - CORRECT ANSWER-Complete this equation: acid + metal oxide -->
salt + water - CORRECT ANSWER-Complete this equation: acid + metal hydroxide -->
salt + carbon dioxide + water - CORRECT ANSWER-Complete this equation: acid +
metal carbonate -->
a lit splint causes a 'pop' - CORRECT ANSWER-What is the test for hydrogen?
lime water - CORRECT ANSWER-What is needed to test for carbon dioxide?
lime water turns cloudy - CORRECT ANSWER-What is the test for carbon dioxide?
a reaction between an acid and a base - CORRECT ANSWER-What is a neutralisation
reaction?
H+ + OH- → H2O - CORRECT ANSWER-Write a general equation for a neutralisation
reaction
titration - CORRECT ANSWER-What technique needs to be used if soluble salts are
prepared from an acid and a soluble reactant?
burette - CORRECT ANSWER-Name this piece of apparatus
pipette - CORRECT ANSWER-Name this piece of apparatus
they are all soluble - CORRECT ANSWER-What is true about common sodium,
potassium and ammonium salts?
true - CORRECT ANSWER-True or false: all nitrates are soluble
hydrogen ions - CORRECT ANSWER-What are acids in solution a source of?
hydroxide - CORRECT ANSWER-What are alkalis in solution a source of?
7 - CORRECT ANSWER-What is the pH of a neutral solution?
low (less than 7) - CORRECT ANSWER-Do acidic solutions have high or low pH
values?
high (greater than 7) - CORRECT ANSWER-Do alkaline solutions have high or low pH
values?
alkaline - CORRECT ANSWER-Is this solution acidic or alkaline?
acidic - CORRECT ANSWER-Is this solution acidic or alkaline?
red - CORRECT ANSWER-Give the colour of methyl orange indicator when it is put into
an acidic solution
yellow - CORRECT ANSWER-Give the colour of methyl orange indicator when it is put
into an neutral solution
yellow - CORRECT ANSWER-Give the colour of methyl orange indicator when it is put
into an alkaline solution
colourless - CORRECT ANSWER-Give the colour of phenolphthalein indicator when it
is put into an acidic solution
colourless - CORRECT ANSWER-Give the colour of phenolphthalein indicator when it
is put into an neutral solution
pink - CORRECT ANSWER-Give the colour of phenolphthalein indicator when it is put
into an alkaline solution
it decreases - CORRECT ANSWER-What happens to pH when hydrogen ion
concentration increases?
it increases - CORRECT ANSWER-What happens to pH when hydrogen ion
concentration decreases?
it decreases by 1 - CORRECT ANSWER-What happens to pH as hydrogen ion
concentration in a solution increases by a factor of 10?
, a concentrated solution has a higher amount of substance dissolved in the solution -
CORRECT ANSWER-What is the difference between a concentrated and dilute
solution?
one that only partially dissociates into ions - CORRECT ANSWER-What is a weak
acid?
one that fully dissociates into ions - CORRECT ANSWER-What is a strong acid?
any substance that reacts with an acid to form a salt and water only - CORRECT
ANSWER-What is a base?
soluble bases - CORRECT ANSWER-What are alkalis?
salt + hydrogen - CORRECT ANSWER-Complete this equation: acid + metal -->
salt + water - CORRECT ANSWER-Complete this equation: acid + metal oxide -->
salt + water - CORRECT ANSWER-Complete this equation: acid + metal hydroxide -->
salt + carbon dioxide + water - CORRECT ANSWER-Complete this equation: acid +
metal carbonate -->
a lit splint causes a 'pop' - CORRECT ANSWER-What is the test for hydrogen?
lime water - CORRECT ANSWER-What is needed to test for carbon dioxide?
lime water turns cloudy - CORRECT ANSWER-What is the test for carbon dioxide?
a reaction between an acid and a base - CORRECT ANSWER-What is a neutralisation
reaction?
H+ + OH- → H2O - CORRECT ANSWER-Write a general equation for a neutralisation
reaction
titration - CORRECT ANSWER-What technique needs to be used if soluble salts are
prepared from an acid and a soluble reactant?
burette - CORRECT ANSWER-Name this piece of apparatus
pipette - CORRECT ANSWER-Name this piece of apparatus
they are all soluble - CORRECT ANSWER-What is true about common sodium,
potassium and ammonium salts?
true - CORRECT ANSWER-True or false: all nitrates are soluble
