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Unit 2 B the cooling curve.
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This is an assignment for Physics unit 2 B about the cooling curve and it contains all the informations for this assignment.
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What exactly is a thermometer?A thermometer is a temperature-measuring instrument. It may measure the temperature of a solid
such as food, a liquid such as water, or a gas such as air. Celsius, Fahrenheit, and kelvin are the three
most used temperature measuring units.
What Is the Thermometer Principle?
Solids and liquids both expand when heated. As the temperature rises, the mercury in thermometers
expands and moves higher to indicate the temperature.
Thermometers are used as measurement tools for determining how hot or cold a thing is. It is made
from a glass tube filled with liquid mercury. When the thermometer bulb is immersed in the proper
substance or object, the mercury starts to increase. This mercury expansion is calculated using the
temperature. To determine the temperature of the specified object or solution, utilise the reading.
As a result, the degree of hotness or coolness of the specified solution or item determines how a
thermometer functions.
What kind of thermometer is it?
There are infrared thermometers, strip thermometers, ear (tympanic) thermometers, and more
forms. mercury-based temperature gauges.
Why is it necessary to calibrate the thermometer?
In contrast to glass thermometers, which require time to calibrate and settle on a reading, digital
thermometers may deliver fast, extremely sensitive temperature readings. They can monitor a larger
range of temperatures since they are not constrained by the thermodynamic characteristics of a
liquid.
These instruments, like other test equipment, are susceptible to long-term manufacturer
specification drift. In healthcare, power generation, pharmaceutical, and other industrial industries,
inaccurate readings jeopardise quality and health and safety regulations. The calibration of
thermometers is crucial to ensure that technicians and other specialists monitoring the process have
trust in the data they are reading.
Aim: Calibrating a thermometer, measuring the cooling curves of candle wax, and measuring the
cooling curves of steric acid.
Risk assessment
Name of assessor: Colin Purkey
, Date:
Activity: Calibration of a thermometer, measurement of candle wax cooling curves, and
measurement of steric acid cooling curves.
Hazard: beakers, boiling tube, broken glassware, Bunsen burner
Risk burns the skin, getting injured, skin cut, toxic and irritation.
Precaution: Wearing lab coat, gloves and goggles.
Those at risk: teachers and students.
Training: COSHH, CLEASSP.
Emergency action: call 999
Signature of assessor: C.P.
Equipment: Beaker(250cm3), Stop clock, Boiling tube, Thermometer, Fireproof mat, Clamp, Stand
and boss, Bunson burner, Tripod, Gauze.
Paraffin wax, water, Stearic acid.
Method:
Ice water: I filled a glass with ice cubes, then top off with icy water. Next, I stirred the water and let it
stirs for 3 minutes. After, that I inserted the thermometer into the glass, and I made sure not to
touch the sides. Finally, I read the thermometer recorded the difference and offset my thermometer
as appropriate.
Boiling water: I boiled a pot of distilled water in a beaker by using Benson Burner. When the water
reached the boiling point, I inserted the thermometer, then I recorded the temperature.
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