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What heats more quickly a kilogram of water or a kilogram of copper?
A kilogram of copper heats more quickly than a kilogram of water because copper has a lower specific heat capacity than water. This means it takes less energy to raise the temperature of copper compared to water.
What is the relationship between the heats of combustion and the stability of a compound?
The heats of combustion of a compound are related to its stability. Compounds with higher heats of combustion are generally less stable because they release more energy when they react with oxygen. This means they are more likely to undergo combustion reactions and are less stable compared to compounds with lower heats of combustion.
Most substances become less dense as the temperature increases. Which substance is an exception to this rule?
Water is an exception to this rule as it becomes less dense when it freezes and forms ice. This is due to the unique arrangement of water molecules in ice compared to liquid water, causing it to expand and become less dense.
Why is the density of water temperature dependent?
The temperature of water is determined by the amount of vibration of the water molecules. Heat is random molecular motion. And if molecules are vibrating more, they are also going to occupy more space.
Does polar water diluted by melting ice become less or less dense?
less denser than
Where in water is the lowest density?
The lowest density in water occurs at 4 degrees Celsius, where water is most dense. As water cools below or heats above this temperature, its density decreases, causing it to expand and become less dense.
How convection work in an electric kettle?
In an electric kettle, the heating element at the base heats the water closest to it, causing this water to become less dense and rise towards the top. As it rises, cooler water from the top of the kettle moves downwards to replace it. This creates a circular motion known as convection currents, ensuring that the water heats up evenly.
In what two places do convection currents form when the Sun heats Earth?
Convection currents form in the atmosphere and oceans when the Sun heats the Earth. As the air and water near the Earth's surface warm up, they become less dense and rise, creating a circulation pattern where cooler air or water replaces them.
What is it called when water heats up?
When water heats up, it undergoes a process called heat absorption. As the temperature of the water increases, its molecules gain energy and move faster, causing the water to become warmer.
What heats up faster water or aluminum?
Aluminum heats up faster than water because it has a lower specific heat capacity. This means that it requires less energy to raise the temperature of aluminum compared to water.
How much electricity does a tankless water heater use compared to a traditional water heater?
A tankless water heater uses less electricity compared to a traditional water heater because it only heats water when needed, whereas a traditional water heater continuously heats and stores water.
Why does land become hot faster than a body of water?
Water heats slower because it has a higher specific heat capacity.
How is the fall of rain?
The sun heats up the water then the water vapour condenses into clouds. The clouds become saturated and precipitation is the result.
When the sun heats the oceans surfac what happens to the water density?
When the sun heats the ocean's surface, the water temperature increases, causing the water to expand. This expansion leads to a decrease in water density since warmer water is less dense than cooler water. As a result, the warmer, less dense water tends to rise, while cooler, denser water sinks, creating convection currents in the ocean.
What heats up the earth's water?
The sun's energy heats up the Earth's water.
What heats more quickly a kilogram of water or a kilogram of copper?
A kilogram of copper heats more quickly than a kilogram of water because copper has a lower specific heat capacity than water. This means it takes less energy to raise the temperature of copper compared to water.
Why is a car bad for the ocean?
because it heats the world, melts the ice , and because of this it puts to much salt-less water into the sea.
