AO1 EXAM QUESTIONS WITH COMPLETE SOLUTIONS
GUARANTEED PASS BRAND NEW 2025
Which two substances have intermolecular forces between
particles 2marks - ANSWER - > Poly(ethane)
Water
Compare the structure and bonding of the three compounds:
-carbon dioxide
-magnesium oxide
-silicon dioxide - ANSWER - > -both carbon dioxide and silicon
dioxide are made up of atoms
-but magnesium oxide is made up of ions
-both silicon dioxideband magnesium oxide are giant structures
-but carbon dioxide is small molecules
-with weak intermolecular forces
-all three compounds have strong bonds
-both carbon dioxide and silicon dioxide are formed from two
non-metals
-bonds formed are covalent
-so electron pairs are shared between atoms
-magnesium oxide is formed from a metal and a non metal
-bonds in magnesium oxide are ionic
-electrons are transferred
-from magnesium to oxygen
,-two electrons are transferred
-bonds in silicon dioxide are single bonds
-each silicon forms four bonds
-each oxygen forms two bonds
-In carbon dioxide the bonds are double bonds
-carbon forms two double bonds
-oxygen forms one double bond
ignore : melting point , electrical conductivity
What are the properties of transition metals 2 marks - ANSWER
- > -the form ions with different charges
-the have high melting points
A student added copper metal to colourless silver nitrate
solution
The student observed :
-pale grey crystals forming
-solution turning blue
Explain how these observations show that silver is less reactive
than copper 3marks - ANSWER - > the grey crystals are silver
the copper ion produced are blue
because copper displaces
, A student is given three metals X,Y and Z to identify
The metals are given magnesium, iron and copper
Plan an investigation to identify the three metals by comparing
their reactions with dilute hydrochloric acid
Your plan should give valid results 4marks - ANSWER - > -add
the metals to hydrochloric acid
-measure temperature change
or
compare rate of bubbling
or
compare colour of resulting
for copper:
-no reaction
-shown by no temp. change
for magensium and iron :
-magnesium increases temp.more than iron
control variables :
-same conc.
-same mass
-same particle size of metal
-same temp.
GUARANTEED PASS BRAND NEW 2025
Which two substances have intermolecular forces between
particles 2marks - ANSWER - > Poly(ethane)
Water
Compare the structure and bonding of the three compounds:
-carbon dioxide
-magnesium oxide
-silicon dioxide - ANSWER - > -both carbon dioxide and silicon
dioxide are made up of atoms
-but magnesium oxide is made up of ions
-both silicon dioxideband magnesium oxide are giant structures
-but carbon dioxide is small molecules
-with weak intermolecular forces
-all three compounds have strong bonds
-both carbon dioxide and silicon dioxide are formed from two
non-metals
-bonds formed are covalent
-so electron pairs are shared between atoms
-magnesium oxide is formed from a metal and a non metal
-bonds in magnesium oxide are ionic
-electrons are transferred
-from magnesium to oxygen
,-two electrons are transferred
-bonds in silicon dioxide are single bonds
-each silicon forms four bonds
-each oxygen forms two bonds
-In carbon dioxide the bonds are double bonds
-carbon forms two double bonds
-oxygen forms one double bond
ignore : melting point , electrical conductivity
What are the properties of transition metals 2 marks - ANSWER
- > -the form ions with different charges
-the have high melting points
A student added copper metal to colourless silver nitrate
solution
The student observed :
-pale grey crystals forming
-solution turning blue
Explain how these observations show that silver is less reactive
than copper 3marks - ANSWER - > the grey crystals are silver
the copper ion produced are blue
because copper displaces
, A student is given three metals X,Y and Z to identify
The metals are given magnesium, iron and copper
Plan an investigation to identify the three metals by comparing
their reactions with dilute hydrochloric acid
Your plan should give valid results 4marks - ANSWER - > -add
the metals to hydrochloric acid
-measure temperature change
or
compare rate of bubbling
or
compare colour of resulting
for copper:
-no reaction
-shown by no temp. change
for magensium and iron :
-magnesium increases temp.more than iron
control variables :
-same conc.
-same mass
-same particle size of metal
-same temp.
