Core practical 1 Lab

CPAC 2c - Identifies and controls significant quantitative variables where applicable, and plans approaches to take account of variables that cannot readily be controlled.

·        Select the correct size cylinder and equipment as in diagram OR chooses to set up a gas syringe

·        Correctly weigh test tube before and after addition of calcium carbonate

·        Record weigh of calcium carbonate weighed out

·        Record weight of calcium carbonate added

·        Measure the volume of gas produced to 0.5 cm3

·        Carry out 6 repeats with increasing mass of appropriate values

• Plan is carried out as described

CPAC 3b - Uses appropriate safety equipment and approaches to minimise risks with minimal prompting.

·        Collect all eqpt at start to minimise walking around the lab once practical work

·        Set up work space in an organised fashion

·        Wear safety goggles & lab coats throughout

·        No spillages/deals with spillages appropriately with minimal fuss

·        Keep stoppers on bottles when not in use

·        Hold boiling tubes in racks or clamp (to prevent rolling off the table & smashing)

·        Measure out powders next to balance to prevent walking around lab with bottles/open containers of powders

·        Correct disposal of reaction mixture (reagents & products) at end of practical

·        Area cleared away properly & cleaned down (if needed) for following students without prompting