10 Questions
What is the expected physical state of water at 25°C?
Liquid
Why is ice at 273 K more effective in cooling than water at the same temperature?
Because ice requires more heat energy to increase its temperature
What produces more severe burns, boiling water or steam?
Steam, because it has a higher temperature and latent heat of vaporization
What is the purpose of the rubber sheet in the particle movement model?
To stretch and show particle movement in a gas
What is the primary material used in the construction of an 'iron almirah'?
Iron
What is the function of the string in the particle movement model?
To create vibrations and show particle movement
What is the expected physical state of water at 0°C?
Solid
Why is water at room temperature a liquid?
Because of the strong intermolecular forces between water particles
What is the primary difference between the physical states demonstrated in the model?
Particle arrangement
What is the purpose of the transparent jar in the particle movement model?
To observe particle movement in a gas
Explore the concept of particulate matter through an activity. Measure the water level in a beaker, dissolve salt or sugar, and observe the changes. Understand what happens to the dissolved substance and how it relates to the idea that matter is composed of particles.
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