OCR A Level Chemistry Practical Skills Exam with Questions and Answers (2025-
2026) – 100% Solved
distillation set up - ✔✔✔-distillation set up
filtration - ✔✔✔-filtration
Filtration under reduced pressure - ✔✔✔-filtration under reduced pressure.
how can we measure the melting point of a sample? - ✔✔✔-- Melting point can be measured in
an electronic melting point machine.
or
- by using a practical set up where the capillary tube is strapped to a thermometer immersed in
some heating oil.
- In both cases a small amount of the sample is put into a capillary tube. The tube is heated up
and is heated slowly near the melting point.
how to ensure a reaction is complete when heating in a crucible? - ✔✔✔-heat until constant
mass.
how to form a standard solution? - ✔✔✔-1) weigh some sodium hydrogencarbonate into a
weighing boat and then put into a 250 cm3 beaker.
2) add small vol of distilled water to beaker until solid dissolves.
3) transfer solution to a 250 cm3 volumetric flask using a funnel.
4) rinse beaker and the glass rod with distilled water, adding the washings to the volumetric
flask.
5) fill the volumetric flask up to the graduated line using distilled water.
6) stopper the flask and invert a few times to mix the solution.
how to measure gas volumes? - ✔✔✔-- gas synringe
2026) – 100% Solved
distillation set up - ✔✔✔-distillation set up
filtration - ✔✔✔-filtration
Filtration under reduced pressure - ✔✔✔-filtration under reduced pressure.
how can we measure the melting point of a sample? - ✔✔✔-- Melting point can be measured in
an electronic melting point machine.
or
- by using a practical set up where the capillary tube is strapped to a thermometer immersed in
some heating oil.
- In both cases a small amount of the sample is put into a capillary tube. The tube is heated up
and is heated slowly near the melting point.
how to ensure a reaction is complete when heating in a crucible? - ✔✔✔-heat until constant
mass.
how to form a standard solution? - ✔✔✔-1) weigh some sodium hydrogencarbonate into a
weighing boat and then put into a 250 cm3 beaker.
2) add small vol of distilled water to beaker until solid dissolves.
3) transfer solution to a 250 cm3 volumetric flask using a funnel.
4) rinse beaker and the glass rod with distilled water, adding the washings to the volumetric
flask.
5) fill the volumetric flask up to the graduated line using distilled water.
6) stopper the flask and invert a few times to mix the solution.
how to measure gas volumes? - ✔✔✔-- gas synringe
