When water is heated does it become more or less dense?

Answer 1

No, it is less then. Density rho = mass / Volume.

Water has a density of 1,000 kg/m3 = 1,000 g/L = 1.000 kg/dm3 = 1.000 kg/L = 1.000 g/cm3 = 1.000 g/mL at the temperatur of 3.98 degrees Celsius.

Temperature in degrees Celsius

and the density of water:

1 ................. 999,90

2 ................. 999,94

3 ................. 999,96

4 ................. 999,97

5 ................. 999,96

6 ................. 999,94

7 ................. 999,90

You see the highest number only at 4 degrees Celsius.

Answer 2

Yes. As matter cools the molecules that make it up begin to lose energy and slow down. As the molecules slow more and more, they start to get closer and closer to each other. These molecules' close proximity makes it harder for other molecules to pass in between.

Answer 3

Water gets more dense as it cools, however water is special in the way it freezes. When water freezes into a solid it becomes less dense than water as a liquid, which is why ice floats. This is due to the arrangement of the water molecules in ice.

Answer 4

In general, heated water is less dense than cooler water or water that has just melted (as that water is quite cold). Note, however, that water undergoes a density change as it nears freezing. As water cools, it becomes more dense, but at a bit above freezing, it actually expands slightly and is, therefore, less dense. As water that is just above freezing cools and changes state to a solid, it becomes slightly less dense than liquid water. This explains why ice floats. The ice is less dense than the water in which it floats (or else it would not float).

Answer 5

Water is a very unusual substance.

Start with a piece of ice, and warm it slowly. At 32° Fahrenheit (0° Celsius), it melts and turns to water.

From there up to 39° F (4° C), it shrinks/contracts/becomes more dense.

Then, as it continues to warm, it expands/becomes less dense as it warms past 39° F (4° C).

Answer 6

When water is heated, it becomes less dense. This is because the heat causes the water molecules to move further apart, leading to a decrease in density.