Please enable JavaScript.
Coggle requires JavaScript to display documents.
Measurement and experimental techniques - Coggle Diagram
Measurement and experimental techniques
Quality
Time
S.I unit
Second (s)
Measurement
Analogue stopwatch
Digital stopwatch
Temperature
S.I unit
Kelvin (k)
Measurment
Alcohol thermometer
Mercury thermometer
Mass
S.I unit
Kilogram (kg)
Measurement
Electronic mass balance
Volume
S.I unit
Cubic metre (m3)
Measurement
Beaker
Measures estimated volumes of liquids
Measuring cylinder
Measure volume of liquids to the nearest 0.5 cm3
Pipette
Measures an accurately fixed volume of liquid
Burette
Measures an accurately fixed of liquid to the nearest 0.05 cm3
Measurement of gases
Gas syringe
Measure the volume of gas produced in a reaction
Collection of gases
Factors
Solubility
Density
Downward delivery
Used for gases that are denser than air
Examples
Chlorine, Hydrogen chloride
Upward delivery
Used for gases that are less denser than air
Examples
Hydrogen, ammonia
Displacement of water
Used for gases that are insoluble in water
Examples
Carbon dioxide, hydrogen and oxygen
Drying of gases
Concentrated sulfuric acid
Cannot be used on alkali gases as neutralisation will occur
Quicklime (calcium oxide)
Cannot be used on acidic gases as neutralisation will occur. This is because calcium oxide is a basic oxide
Fused calcium chloride
Can be used on both acidic and alkali gases as calcium chloride is neutral