In the solid state, water (ice) is rigid with fixed shape. As a liquid, water flows freely and takes the container’s shape. In the gaseous state (steam), water molecules move rapidly and spread out in all directions.
Category: Class 6 Science
NCERT Solutions and Important Questions for class 6 Science for CBSE exams 2020-2021.
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Yes, the smell of food spreads without entering the kitchen because of diffusion. The aroma, carried by air particles, travels from the kitchen to surrounding areas, allowing us to detect it without being close.
To quickly change ice to water, increase its temperature above 0°C. This can be done by applying heat, placing the ice in a warm environment, or using hot water, causing the ice to melt faster.
Atmospheric Water Generator (AWG) machines extract moisture from the air and convert it into drinking water. They use cooling or desiccation methods to condense water vapor, making them a reliable source in areas with water scarcity.
To change water into ice, lower the temperature to 0°C or below. When water is cooled to its freezing point, it undergoes a phase change from liquid to solid, turning into ice due to decreased molecular movement.