Matter in Our Surroundings — Practice Quiz
Madhya Pradesh Board · Class 9 · Science
Try a 4-question quiz on Matter in Our Surroundings for Madhya Pradesh Board Class 9 Science: tap an answer to check it and see why.
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Quick Quiz: Matter in Our Surroundings
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What are the three states of matter?
What happens when we dissolve salt in water?
The process of change from solid to liquid is called:
Liquids have:
Sample Questions
Which of the following properties belong to solids?
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Fixed shape, Fixed volume, Particles are closely packed
Solids have a fixed shape and fixed volume because their particles are closely packed and held together by strong forces of attraction. They cannot flow easily like liquids and are not highly compressible like gases.
Which factors affect the rate of evaporation?
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Surface area, Temperature, Wind speed, Humidity
The rate of evaporation increases with increase in surface area, temperature, and wind speed, but decreases with increase in humidity. The color of the liquid does not significantly affect evaporation rate.
The temperature at which a solid changes to liquid is called:
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Melting point
The melting point is the temperature at which a solid changes to liquid at atmospheric pressure. For ice, this is 0°C or 273 K. Boiling point is for liquid to gas conversion, and freezing point is for liquid to solid conversion.
Which state of matter has particles that are:
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Most closely packed in solids, Freely moving in gases, Can slide over each other in liquids, Have maximum kinetic energy in gases
In solids, particles are most closely packed with least kinetic energy. In liquids, particles can slide over each other with intermediate kinetic energy. In gases, particles move freely with maximum kinetic energy and are farthest apart.
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