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Water atoms do not expand or multiply when heated. When water is heated, the heat energy causes the water molecules to move faster and farther apart, which results in the expansion of the water volume. The number of water molecules remains the same.
No, most solids contract when cooled, as the lower temperature causes the atoms or molecules to move less, leading to a decrease in volume. However, there are exceptions, such as water, which expands when cooled below 4°C before turning into ice.
All liquids expand when heated. e.g. Mercury in a thermometer. One exception may be water when heated form 0 to 4 degrees Celsius.
The scientific process of water being heated up is called thermal expansion. As water is heated, its molecules gain energy, move faster, and spread out, causing the water to expand in volume.
Yes, most liquids expand when heated because the heat causes the molecules within the liquid to move faster and spread out, increasing the overall volume. However, there are exceptions such as water, which expands when heated until it reaches a temperature of 4 degrees Celsius, at which point it begins to contract.
Water has three states Solid (ice) liquid (water) gas (steam) When water is heated it expands and when it is cooled it contracts until about 4 degrees Celsius when it begins to expand again. So the answer to your question is it depends on what temperature the water is. If it is a liquid and over 4 degrees then it will expand. If it is not frozen but somewhere between 0 and 4 degrees it will contract until about 4 degrees and then expand. Under 0 degrees it is ice not water, over 100 degrees it is steam not water.