Podcast
Questions and Answers
A thermometer is a device used to measure the ______ of a body.
A thermometer is a device used to measure the ______ of a body.
temperature
Common thermometric liquids include those that exhibit ______ thermal expansion with temperature changes.
Common thermometric liquids include those that exhibit ______ thermal expansion with temperature changes.
uniform
Mercury is widely used in thermometers due to its low ______ point and high boiling point.
Mercury is widely used in thermometers due to its low ______ point and high boiling point.
freezing
A good thermometric liquid should ______ wet glass, which prevents sticking inside the thermometer.
A good thermometric liquid should ______ wet glass, which prevents sticking inside the thermometer.
The thermometric liquid should have a ______ specific heat capacity for a faster response to temperature changes.
The thermometric liquid should have a ______ specific heat capacity for a faster response to temperature changes.
Flashcards
What is a thermometer?
What is a thermometer?
A device used to measure the temperature of a body or a substance.
What is a thermometric material?
What is a thermometric material?
A substance that changes with temperature, often used in thermometers.
What is uniform thermal expansion?
What is uniform thermal expansion?
The ability of a liquid to expand uniformly with temperature changes.
What is the freezing point of a liquid?
What is the freezing point of a liquid?
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What is the boiling point of a liquid?
What is the boiling point of a liquid?
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Study Notes
Internal Energy of a Body
- Internal energy is the sum of kinetic and potential energies of atoms, molecules, and particles within a body.
- Kinetic energy is due to motion, influenced by temperature.
- Potential energy is stored energy, related to intermolecular forces.
- Internal energy depends on factors like mass, kinetic/potential energies of its molecules.
Thermometers
- Thermometers measure temperature.
- Suitable materials for thermometers change properties with temperature (e.g., expansion, color change, electrical resistance).
- Liquids are commonly used due to their expansiveness on heating.
- Thermometric liquid properties:
- Visible
- Uniform thermal expansion
- Low freezing point
- High boiling point
- Does not wet glass
- Good heat conductor
- Small specific heat capacity
- Mercury is often used in laboratory thermometers due to its desirable thermal properties, allowing for easy observation of temperature changes.
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