State the 3 apparatus that can be used to measure volume of liquids and when to use which.
(1) measuring cylinder - for measuring rough volumes (nearest cm3) (2) pipette - for measuring fixed volumes accurately (usually 25.0 cm3) (3) burette - for measuring volumes accurately with d.p (e.g. 24.10 cm3)
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State the 3 methods for gas collection and when to use which.
(1) displacement of water - for gases insoluble in water (2) upward delivery - for gases less dense than air (3) downward delivery - for gases denser than air
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State the 3 common drying agents and when to use which.
(1) conc. sulfuric acid - for acidic gases or gases that dissolve in water to give acids (2) quicklime - for basic gases i.e. ammonia (3) fused calcium chloride - for neutral gases
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