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thermometry (mercury (easy to see, responds quickly to temperature changes…
thermometry
mercury
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- responds quickly to temperature changes
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- high boiling point (375°) , can measure high temperatures
- high freezing point (-39°) , cannot measure low temperature
- a poisonous liquid , unsafe for use by children
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- small expansivity and scale markings are close to one another making it hard to read
alcohol
- has to be coloured to be seen
- does not respond quickly to changes in temperature
- clings to the sides of the capillary tube
- low boiling point (78°) , cannot measure high temperatures
- low freezing point (-115°) , can measure low temperatures
- a safe liquid , safe for use by children
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- large expansivity and scale markings are far apart from one another making it easier to read
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thermometer : makes use of physical properties that change continuously and uniformly with temperature to increase temperature
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