Question
How are properties of matter measured?
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Answer
- Measurement involves comparing a property of matter with some fixed standard which is reproducible and unchanging.
- Properties such as mass, length, area, volume, time, etc. are quantitative in nature and can be measured.
- A quantitative measurement is represented by a number followed by units in which it is measured.
- These units are arbitrarily chosen on the basis of universally accepted standards. e.g. Length of class room can be expressed as 10 m. Here, 10 is the number and ‘m’ is the unit ‘metre’ in which the length is measured.
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