Most Thermometers Use What Property Of Metals To Measure Temperature?
Mercury is the only metal that is in liquid state at room temperature. It is used in thermometers because it has a high coefficient of expansion which makes it easy to move in the thermometers as per the temperatures. Mercury has a boiling point which makes it suitable to measure higher temperatures.Oct 15 2020
Which metal is used in thermometer to check the temperature?
Which metal is liquid at room temperature that is used in thermometer answer?
Mercury is a dense silvery d-block element. It is the only metal that is liquid at standard conditions for temperature and pressure.
Which metal is used in clinical thermometer* 1 point?
What is the silver metal in a thermometer?
If the liquid in your thermometer bulb is silver then the liquid might be: Mercury. A non-toxic compound that looks similar to mercury.
What properties should the material used in a thermometer have?
- It must have a high coefficient of thermal expansion.
- It should be sensitive to small temperature change.
- Substance used must be in liquid form and it should not stick to the surface of glass.
What metal is used in liquid metal?
The standard metal for creating liquid alloys used to be mercury but gallium-based alloys which are lower both in their vapor pressure at room temperature and toxicity are being used as a replacement in various applications.
Can we use bromine in thermometer?
The bromine and mercury exists in liquid form at room temperature. Explanation: … The specific heat of mercury is typically low. The bromine does not show above properties like mercury thus bromine cannot be used as a liquid in the thermometer.
What is the metal that is used in digital thermometers?
mercury
Digital Thermometers are mercury free. These thermometers contain thermistor inside the tip which is used to measure the temperature. They provide quick and highly accurate results over the body temperature range.May 2 2012
Which metal is used in clinical thermometer Class 7?
What kind of mercury is in thermometers?
Thermometers with a silver line contain elemental mercury. Thermometers with a red or blue liquid do NOT contain mercury. There is much misinformation about mercury its various forms and its dangers. Three different types of mercury exist varying in their levels of toxicity.
Which metal is used in mercury?
…
Mercury (element)
| Mercury | |
|---|---|
| Symbol | “Hg”: from its Latin name hydrargyrum itself from Greek hydrárgyros ‘water-silver’ |
| Main isotopes of mercury | |
Which of the following materials is used in high temperature thermometer?
High Temperature Thermometers. The thermometer resembles that of the mercury in glass type but is graduated to 1000°C. It uses fused quartz as the container and the rare metal gallium as the filling liquid.
What is the property of temperature?
This is a funny question because temperature is a property of matter – a physical property to be exact. This includes the temperature points of changing states – boiling melting and freezing points. In terms of matter itself temperature is directly proportional to the average kinetic energy of particles.
What physical property does a thermometer measure?
A thermometer is a device used to measure temperature. Temperature is the average kinetic energy of a material’s molecules or its average thermal energy. Heat is transferred to the thermometer causing changes in its physical properties.
Which property of matter is used in measurement of temperature?
The property of matter that is used in the measurement of temperature is thermal conductivity. Scientists used the Celsius and thermodynamic temperature to measure the temperature using the Kelvin scale which can be taken as an offset value of the Celsius scale.
How many metals are liquid at room temperature?
The only liquid elements at standard temperature and pressure are Bromine (Br) and Mercury (Hg). Although elements Caesium (Cs) Rubidium(Rb) Francium (Fr) and Gallium (Ga) become liquid at or just above room temperature.
Which non-metal is liquid at room temperature?
Which metal is the best conductor of heat?
- Silver. Silver is one of the best metals for conducting heat because it works as a powerful reflector. …
- Copper. Copper is yet another good conductor of heat because it absorbs heat quickly and holds it for a long period of time. …
- Aluminum. …
- Brass.
Why is the mercury the only liquid metal used in thermometers?
Mercury is the only metal that is in liquid state at room temperature. It is used in thermometers because it has a high coefficient of expansion which makes it easy to move in the thermometers as per the temperatures. Mercury has a boiling point which makes it suitable to measure higher temperatures.
What is special about mercury and bromine?
The key difference between bromine and mercury is that bromine is the only halogen that is in a liquid state at room temperature whereas mercury is the only metal that is in a liquid state at room temperature. Both bromine and mercury can be found in their liquid state at standard temperature and pressure conditions.
What is the range of laboratory thermometer?
Is mercury used in digital thermometer?
The oldest thermometers used are mercury in glass. Newer thermometers include non-mercury liquids in glass and digital and electronic devices that use sensors to measure temperature. Thermometers that check body temperature in the ear across the forehead or have a digital display do not contain mercury.
Which thermometer is best mercury or digital?
1. Digital thermometers provide faster results. Digital thermometers provide fast results as opposed to mercury thermometers whose readings are slower to realize because you have to wait for the mercury to heat and then slowly rise to display the temperature.
Does laboratory thermometer have mercury?
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.
Which of the following metal is used in barometer and thermometer?
Mercury (Hg) is the metal which is used in barometer and thermometer.
Which instrument is used to measure your body temperature?
What is that silver stuff in a thermometer Class 7?
Ans. Silver stuff in a thermometer is mercury.
Is mercury in a thermometer an element or compound?
Mercury also called quicksilver is a chemical element in the periodic table that has the symbol Hg and atomic number 80. A heavy silvery transition metal mercury is one of five elements that are liquid at or near room temperature.
Is it illegal to have a mercury thermometer?
Those days have passed. Since 2001 20 states have banned mercury “fever thermometers” for medical use and regulations tighten every year. … But as of today the federal government has more or less killed the mercury thermometer in the United States—NIST has announced it will no longer calibrate mercury thermometers.
Which two metals become liquid at a temperature slightly above room temperature?
Explanation: Cesium (Ce) and Gallium (Ga) are 2 metals that become liquids at a temperature slightly above room temperature. There are other metals too like Rubidium (Rb) and Francium (Fr) that become liquids at a temperature slightly above room temperature.
What happens when mercury falls on gold?
Which of the following metal is used in thermometer copper mercury Aluminium iron?
Answer: b. Mercury is the metal which is used in thermometers.
Does a thermometer measure its own temperature?
Thermometers actually take their own temperature not the temperature of the object they are measuring. This raises the question of how we can be certain that a thermometer measures the temperature of the object with which it is in contact.
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