What are a liquid and a solid with the same density?

I believe butter would qualify for this. It is a solid at refrigerated temperatures of 50F and below and is a liquid at 90F and the density is 911 kg/m3

Ice is lower density than water (about 9%), that's why it floats in water

If you fill up a cup with water and add ice, what happens to the ice? It floats to the top meaning that water has a greater density.

One of the properties of water is that its volume increases when you freeze it, that's why if you put a glass bottle filled with water in the freezer, the bottle would break. This is caused by the hydrogen bonds.

The formula for density is density = mass/volume so if the volume changes, they don't have the same density.

If a solid and a liquid have the same density, the solid will be suspended in the middle of the liquid.

You can try experimenting with some different things. Use vegetable oil and a tooth pick or salt water and a tooth pick. If you make a mixture of salt and water, be sure to write down how much water you start with and how much salt you add. The more salt you add, the higher the density will be.

Anything depending of the what it is will have the same density as a liquid and solid depending on its mass, and temperature. You have to try it at different temperatures!

Is Ice and water at the same Temperature no.

So your correct it does not have to be water...

The following is correct. Liquid H20 at +60°C with a Density of 983.2. An Solid H20 at −35°C with a Density 983.2. They are equal only around those temperatures. Check the link...

An no Ice does not always float because of its Density, its because of its Mass also... This only happens if the temperature of the H20 Liquid is just high enough and the H20 Solid is low enough. At some temperatures it will float at others it will sink.

What the link saids,,

Temp (°C) / Density (kg/m3)

+100 / 958.4

+80 / 971.8

+60 / 983.2

+40 / 992.2

+30 / 995.6502

+25 / 997.0479

+22 / 997.7735

+20 / 998.2071

+15 / 999.1026

+10 / 999.7026

+4 / 999.9720

0 / 999.8395

−10 / 998.117

−20 / 993.547

−30 / 983.854

So have the water about 30°C and the Ice about 50°C and then tell us what happens the ice will sink...

The formula for density is density = mass/volume

so there is the volume and mass that can change...

You have to include those too. Just because one changes doesn't mean the other can't change and be the same.

Yeah, So water is unique in that its density doesnt continuing getting higher as it temperature goes lower (Normally if the temperature keeps getting lower the density keeps getting higher).

ex: Im going use numbers that are not correct but they show the trend.

100 F the desnity is 10

70 F the density is 15

30F the density is 20

10 F the density is 30

4 F the density is 35

-10F (ice) the density is 30 *[ notice the density stopped increasing...it started getting lower ]

-20F (ice) the density is 25

Notice that at -10 F the density is the 30 but the density is 30 at +10 F too. Therefore the density can be the same for water as a solid and as a liquid

solid: sponge

Liquid: any sort of heavy liquid.

If you take the same volume of both the solid and the liquid and they are equally as heavy, then they will have the same densities

sponge has a low density since it is porous. It takes a lot of space in air, but its a whole bunch of nothing spaced around and so doesnt weigh as much

Hope it helps

Ice and water

ice, ice baby. oh and water :)