What are the two advantages of using mercury in thermometer?
Table of Contents
- 1 What are the two advantages of using mercury in thermometer?
- 2 What are the advantages and disadvantages of mercury thermometer?
- 3 What are the advantages of clinical thermometer?
- 4 What are advantages of mercury?
- 5 Do clinical thermometers have mercury?
- 6 How do you clean a mercury thermometer?
- 7 What are mercury thermometers?
What are the two advantages of using mercury in thermometer?
It does not stick to the glass tube. It expands on providing heat to it. It has lower freezing point and higher boiling point. It is a shining metal and when it expands, the expansion can be easily seen.
What are the three advantages of using mercury in thermometer?
Advantages of using mercury in thermometer?? – It expands evenly as the temperature rises. – It is good conductor of heat. – It is opaque and shiny. – It is very sensitive in expansion.
What are the advantages and disadvantages of mercury thermometer?
A thermometer comparison
| advantages | disadvantages |
|---|---|
| Mercury thermometer | |
| cheap | display is harder to read |
| durable | does not work below -39�C (Hg freezing pount) |
| accurate | cannot be used for thermograph |
What are the advantages of using mercury?
Advantages of mercury as a thermometric liquid. -It is a good conductor of heat and therefore the whole liquid reaches the temperature of the surroundings quickly. -It does not wet (cling to the sides of) the tube. -It expands uniformly (linear expansion) and responds quickly to temperature changes, hence is sensitive.
What are the advantages of clinical thermometer?
The advantages of these types of thermometers is that they are cheap, easy to read, can be submerged in liquids, require very little maintenance and are reliable. The disadvantages are that they break easily and there is risk of mercury poisoning if the glass tube breaks.
Why mercury is used in thermometer instead of water?
We use mercury in thermometers because most metals are good conductor of heat and mercury is the only metal in liquid state. No,we cannot use water instead of mercury because water do not expand as per temperature given to it and can give us wrong reading.
What are advantages of mercury?
What are advantages and disadvantages of mercury?
Difference between Advantages And Disadvantages Of Mercury And Alcohol Thermometer
| Advantages | Disadvantages |
|---|---|
| Mercury thermometer | |
| cheap | display is harder to read |
| durable | does not work below -390C (Hg freezing pount) |
| accurate | cannot be used for thermograph |
Do clinical thermometers have mercury?
Mercury-in-glass thermometers have been considered the most accurate liquid-filled types. However, mercury is a toxic heavy metal, and mercury has only been used in clinical thermometers if protected from breakage of the tube.
Is mercury present in laboratory thermometer?
Laboratory thermometers A laboratory thermometer has a long stem with a silver bulb at the end. The silver color in the bulb usually means there is mercury in it. Mercury becomes bigger as the temperature becomes hotter. But mercury is a poison to humans.
How do you clean a mercury thermometer?
Sprinkle sulfur powder over the contaminated area and rub it gently all over the surface and into the cracks with a paper towel. Sulfur powder binds with mercury. Use a paper towel dampened with water followed by wiping with another damp paper towel to clean up the sulfur and mercury.
Are mercury thermometers more accurate?
While mercury thermometers can measure temperature within one degree Celsius, digital thermometers can be as accurate as 0.001 degrees C a difference of four orders of magnitude in accuracy. This changeover won’t be a big deal for the average person “In fact, you can’t buy [mercury thermometers] anymore,” Strouse said.
What are mercury thermometers?
Common household uses of mercury thermometers include fever thermometers and oven, candy and meat thermometers. Mercury fever thermometers are made of glass the size of a straw, with a silvery-white liquid inside. They are common in many households, schools and medical facilities.
What is a glass mercury thermometer?
Mercury-in-glass thermometer. It is a bulb containing Mercury attached to a glass tube of narrow diameter. The volume of mercury in the tube is much less than the volume in the bulb. The volume of mercury changes slightly with temperature. The small change in volume drives the narrow mercury column up the tube.