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Temperature Scales and Conversion Video Lecture | Chemistry for EmSAT Achieve

FAQs on Temperature Scales and Conversion Video Lecture - Chemistry for EmSAT Achieve

1. What are the main temperature scales used in science?

Ans. The main temperature scales used in science are Celsius (°C), Fahrenheit (°F), and Kelvin (K). Celsius is commonly used in most countries for everyday temperature measurements, Fahrenheit is primarily used in the United States, and Kelvin is used in scientific contexts because it starts at absolute zero, the point where all thermal motion ceases.

2. How do you convert Celsius to Fahrenheit?

Ans. To convert Celsius to Fahrenheit, you can use the formula: °F = (°C × 9/5) + 32. For example, if you have a temperature of 25°C, the conversion would be: (25 × 9/5) + 32 = 77°F.

3. What is the formula for converting Fahrenheit to Celsius?

Ans. The formula for converting Fahrenheit to Celsius is: °C = (°F - 32) × 5/9. For instance, to convert 77°F to Celsius, you would calculate: (77 - 32) × 5/9 = 25°C.

4. What is absolute zero and how is it related to the Kelvin scale?

Ans. Absolute zero is the theoretical temperature at which a substance has minimum thermal energy, and it is defined as 0 Kelvin (0 K). On the Kelvin scale, each unit is equivalent to one degree Celsius, but the Kelvin scale starts at absolute zero, making it essential for scientific calculations involving thermodynamics.

5. Why is the Kelvin scale important in scientific research?

Ans. The Kelvin scale is important in scientific research because it provides an absolute reference point for temperature measurements, which is crucial in fields like physics and chemistry. Since it starts at absolute zero, calculations involving gas laws, thermodynamic processes, and other scientific principles are simplified and more accurate when using Kelvin.

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Sep 21, 2025 Last updated

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