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Water as ice has a cooling effect whereas water and steam may cause severe burns explain this observation?
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Water as ice has a cooling effect whereas water and steam may cause se...
When temperature is decreased to 0oC, water turns into ice. Whereas, when temperature is increased to 100oC, water is converted to steam. Water as steam has more latent heat than water in liquid and solid form. Hence, water as steam can cause severe burns while water as ice has a cooling effect.
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Water as ice has a cooling effect whereas water and steam may cause se...
Why does ice have a cooling effect while steam can cause severe burns?
Thermal Energy and Temperature
Thermal energy is the total kinetic energy of atoms and molecules in a substance. Temperature, on the other hand, is a measure of the average kinetic energy of the particles in a substance. Thermal energy determines the temperature of a substance. When heat is added to a substance, its thermal energy increases, which in turn increases its temperature.
Latent Heat of Fusion and Vaporization
Latent heat of fusion is the amount of heat required to convert a solid into a liquid at its melting point. Latent heat of vaporization is the amount of heat required to convert a liquid into a gas at its boiling point. These processes occur without a change in temperature, as the heat energy is used to break the intermolecular bonds between the particles.
Heat Capacity
Heat capacity is the amount of heat required to raise the temperature of a substance by one degree Celsius. Different substances have different heat capacities, depending on the number and types of particles in the substance.
Ice
Ice has a high heat capacity, which means that it requires a lot of heat energy to raise its temperature. When heat is applied to ice, it first melts into water. The melting process absorbs heat energy from the surroundings, causing the surroundings to cool down. This is why ice has a cooling effect.
Water
Water has a high heat capacity as well, but not as high as ice. When heat is added to water, its temperature increases. However, water also has a high latent heat of vaporization. When water is heated to its boiling point, it requires a large amount of heat energy to turn into steam. This process causes the water to release a lot of heat energy into the surroundings, which can cause severe burns.
Steam
Steam has a low heat capacity, which means that it does not require a lot of heat energy to raise its temperature. When steam comes into contact with the skin, it quickly transfers its heat energy to the skin, causing severe burns.
Conclusion
The cooling effect of ice and the potential for severe burns from water and steam can be explained by the concepts of thermal energy, temperature, latent heat of fusion and vaporization, and heat capacity. Understanding these concepts can help us to handle these substances safely and effectively.
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Water as ice has a cooling effect whereas water and steam may cause severe burns explain this observation?
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Water as ice has a cooling effect whereas water and steam may cause severe burns explain this observation? for Class 9 2024 is part of Class 9 preparation. The Question and answers have been prepared according to the Class 9 exam syllabus. Information about Water as ice has a cooling effect whereas water and steam may cause severe burns explain this observation? covers all topics & solutions for Class 9 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Water as ice has a cooling effect whereas water and steam may cause severe burns explain this observation?.
Water as ice has a cooling effect whereas water and steam may cause severe burns explain this observation? for Class 9 2024 is part of Class 9 preparation. The Question and answers have been prepared according to the Class 9 exam syllabus. Information about Water as ice has a cooling effect whereas water and steam may cause severe burns explain this observation? covers all topics & solutions for Class 9 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Water as ice has a cooling effect whereas water and steam may cause severe burns explain this observation?.
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