Podcast
Questions and Answers
What happens to the kinetic energy of particles as the temperature rises?
What happens to the kinetic energy of particles as the temperature rises?
- It decreases
- It varies randomly
- It increases (correct)
- It remains constant
Why is compressed natural gas (CNG) used as fuel in vehicles?
Why is compressed natural gas (CNG) used as fuel in vehicles?
- Because large volumes of CNG can be compressed into a small cylinder for easy transport (correct)
- Because it has a slow rate of diffusion compared to other gases
- Because it is easier to transport due to its low compressibility
- Because it is less compressible than other gases
How do we perceive the smell of hot cooked food from a kitchen located far away?
How do we perceive the smell of hot cooked food from a kitchen located far away?
- The smell particles move at a variable speed
- The smell particles move at a slow pace
- The smell particles remain confined to the kitchen area
- The smell particles mix with air particles and diffuse rapidly to reach us (correct)
Why do gases show the property of diffusing very fast into other gases?
Why do gases show the property of diffusing very fast into other gases?
What is the minimum temperature at which a solid melts to become a liquid at the atmospheric pressure called?
What is the minimum temperature at which a solid melts to become a liquid at the atmospheric pressure called?
Why does the temperature of a solid remain the same during the process of melting?
Why does the temperature of a solid remain the same during the process of melting?
What is the term used to describe the process of a liquid changing into a gas at a certain temperature?
What is the term used to describe the process of a liquid changing into a gas at a certain temperature?
What is the minimum temperature at which a liquid starts boiling at atmospheric pressure called?
What is the minimum temperature at which a liquid starts boiling at atmospheric pressure called?
Particles in water at 00 C (273 K) have more energy compared to particles in ice at the same temperature. What provides these particles with more energy?
Particles in water at 00 C (273 K) have more energy compared to particles in ice at the same temperature. What provides these particles with more energy?
What term is used to describe the amount of heat energy required to change 1 kg of a solid into liquid at atmospheric pressure at its melting point?
What term is used to describe the amount of heat energy required to change 1 kg of a solid into liquid at atmospheric pressure at its melting point?
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