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What are the two most commonly found in liquid-in-glass thermometers?
The two most commonly found liquids in liquid-in-glass thermometers are mercury and alcohol. Mercury thermometers are used for high-temperature applications, while alcohol thermometers are used for lower temperatures due to their lower toxicity.
How does Mercury work?
Temperature affects the amount the mercury is spread out. Heat causes most liquids to expand, which is how a thermometer works. As heat around the glass protecting the mercury of the thermometer rises, the mercury expands and covers more room in the thermometer.
Is it a solid liquid or gas found in a thermometer?
Actually anything that won't freeze or boil at the operating range of the thermometer. The most common are mercury and alcohol.
Which instrument makes use of the fact that most liquids expand when they are heated?
A thermometer utilizes the fact that most liquids expand when heated. As the temperature of the liquid inside the thermometer increases, its volume expands, causing the liquid to rise within the narrow tube of the thermometer and indicating a higher temperature reading.
Why mercury is used in thermometers instead of other liquids?
-- Mercury doesn't stick to glass and 'wet' the inside surface of the little tube, like some other liquids would. -- Mercury remains liquid (doesn't freeze) until it gets down to around -40°, so it's useful in a thermometer over a wider range of temperatures than most other liquids are.
Temperature can be measured by what?
Temperature is measured by a liquid in glass thermometer in most cases. Other instruments such as thermocouples, resistance or digital thermometers are used for more extreme conditions.
How do you measure room temperature using thermometer?
-- Bring thermometer into room. -- Wave it around in the air of the room for a minute or two. -- Do not hold the thermometer in your hand or breathe on it. -- Wait a while for the room temperature to get through the thermometer glass. -- Look through the glass at the sliver of liquid inside the thermometer. Find the end of the liquid, and see what number is marked on the glass at the same level. That number is your room temperature.
How can you tell if one glass of water has more thermal energy than another glass of water?
If you put a thermometer in each glass the one that reads the highest temperature has the most thermal energy
What are the marks in the thermometer?
Assuming you're talking about a glass thermometer, each mark or 'tick' on the thermometer stands for a 5 degree increase/decrease. Most thermometers should have their degrees labeled in increments of 10, with one mark in between symbolizing an increment of 5, which is (most of the time) unmarked.
What is the difference between measuring a solid than a liquid?
With liquids you can just stick in a thermometer into it. But with solids sometimes you can't do that (because it's solid obviously) so I guess measuring liquids is more accurate in most cases.
What is the most important property of glass?
Transparency is the most important property of glass, allowing it to transmit light and provide visibility. Additionally, glass is a nonporous material, making it impermeable to liquids and gases. Glass is also durable and resistant to many chemical reactions.
Why is the stem of thermometer made up of glass?
Glass is chosen for thermometer stems because it is transparent, allowing easy observation of the liquid inside. Glass is also chemically inert, resistant to thermal expansion, and can be easily calibrated for accurate temperature readings. Additionally, glass is non-reactive with most substances, ensuring that measurements are not affected by the material of the stem itself.
