If you fill a glass with water and ice and the ice melts, does the level of the water go up or down?

Answer 1

It will remain exactly the same - although the ice protruded above the surface of the water, it only does so because it has expanded - and thus become less dense.

As the ice thaws, the water level will remain constant - a test that is easily proved at home with a tall glass and some ice cubes.

The ice MUST be fully supported in the water though, if the ice is resting on the bottom / lip of the glass, then you could stack it up to daft levels and force the test to fail through "cheating".

Mark

Answer 2

It goes down. Water expands when it freezes, so when the ice melts, it takes up less room in the glass as water. It's the same reason why it's common to have 12 inches of snow, but almost unheard of to have 12 inches of rain. Or try this experiment. Take a bottle of water (without the label) , and fill it up half way.
Then draw a line on the outside of the bottle where the water level is. Put it in the freezer over night, and the ice will be above the line that you drew.

Answer 3

Everyone who says the level will change is worng! It will remain exactly the same. When the ice cubes are frozen, they float and about 90% of their volume displaces water.(10% is above water level) When the ice melts, its density icreases, so its volume decreases by about 10%. So the water level will neither rise nor fall, because the amount by which the volume decreases is equal to the amount that was above the water to begin with. As an earlier answerer said, ice is water and melting water in water will not cause the level to rise or fall.

Answer 4

It goes up. Ice floats. One tenth of the ice is actually above the water level. It is true that water expands when it freezes, but it only expands by about 3%. As the ice melts, the volume goes down by 3%. However, the 10% of the ice that was above the water now adds to the water. Overall, the water level goes up by 7% of the volume of the ice that melts.

Answer 5

using hydrogen bonding, ice has a crystalline structure, and the optimal density of water takes position at about 4 ranges Celsius. which means ice is amazingly a lot less dense than water (as evidenced by technique of ice floating on water). because the ice melts, the density will boost (hence the volume decreases), so the point of the water will flow down.

Answer 6

Hi. The floating ice is less dense by exactly the percentage that is above water. The level will not change (assuming all the ice is floating) when the ice melts.

Answer 7

If I remember correctly, the water level will stay the same. Ice has a smaller density than water

Answer 8

It goes up for example put about 3 ice cubes in a glass then fill the glass with water with as much water as possible wait for the ice to melt and then the glass overflows!

Answer 9

it stays the same

if an object displaces an amount water weighing more than it's own weight, it will sink

Less than it's own weight, it will float

equal to it's own weight, it's neutral. Ice is water, therefore it's equal while submerged, when it melts it will remain the same because it displaces the same amount

Answer 10

By looking at all the answers you're getting (because they are all so different), I would suggest consulting a textbook, or searching it on the Internet.