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# Common Physical Quantities in Chemistry Lab This document lists common physical quantities that are measured in a chemistry lab and suggests appropriate measuring apparatus for them. ## Physical Quantities and Measuring Instruments | Quantity | SI Units | Suggested Apparatus | Accuracy | |---|-...

# Common Physical Quantities in Chemistry Lab This document lists common physical quantities that are measured in a chemistry lab and suggests appropriate measuring apparatus for them. ## Physical Quantities and Measuring Instruments | Quantity | SI Units | Suggested Apparatus | Accuracy | |---|---|---|---| | Time | second, minute, hour | Digital stopwatch, Analogue stopwatch | ±0.01 s, ±0.15 s| | Temperature | Kelvin, degree Celsius | Alcohol thermometer (-10°C to 110°C), Digital laboratory thermometer, Temperature sensor connected to data logger | depends on the instrument| | Length | metre, centimetre, decimetre, millimetre | Metre Rule, Measuring Tape (±0.1cm to 0.5cm depending on type) | ±0.1 cm | | Mass | kilogram, gram, tonne | | | | Volume | cubic metre, cubic centimetre, cubic decimetre | | | **Notes:** The accuracy of measurement depends on the chosen apparatus. For example, measuring time using a digital stopwatch is more accurate than an analogue stopwatch. The appropriate apparatus can vary based on the dimensions of the measured quantity.