0
The melting point of ice is 0 °C (32 °F, 273 K) at standard pressure; however, pure liquid water can be super cooled well below that temperature without freezing if the liquid is not mechanically disturbed. It can remain in a fluid state down to its homogeneous nucleation point of approximately 231 K (−42 °C). The melting point of ordinary hexagonal ice falls slightly under moderately high pressures, but as ice transforms into its allotropes (see crystalline states of ice) above 209.9 MPa (2,072 atm), the melting point increases markedly with pressure, i.e. reaching 355 K (82 °C) at 2.216 GPa (21,870 atm) (triple point of Ice VII).A significant increase of pressure is required to lower the melting point of ordinary ice ---the pressure exerted by an ice skater on the ice would only reduce the melting point by approximately 0.09 °C (0.16 °F).
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
The density of water (in kg/m3)
at various temperatures in degrees Celsius
The values below 0 °C refer to super cooled water.
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What is the comparison of density to density of an equal volume of water?
If the density of a substance is greater than the density of water, it will sink in water. If the density of a substance is less than the density of water, it will float on water.
How are mass and volume related to the sinking and floating of an object?
Mass and volume are related to the sinking and floating of an object through their density. An object will sink if its density is greater than the density of the fluid it is placed in, and will float if its density is less than the density of the fluid. The relationship can be expressed as density = mass/volume.
What can you say about the density of a paper clip versus the density water?
The density of a paper clip is greater than the density of water. This means that a paper clip will sink in water as it is more dense than water.
What is the number that compares an objects density to the density of water?
That is the specific gravity of the substance.
Is petrol density higher than water density?
No, the density of petrol is lower than the density of water. Water has a density of 1 g/cm³, while the density of petrol is around 0.75-0.85 g/cm³.
What is the comparison of density to density of an equal volume of water?
If the density of a substance is greater than the density of water, it will sink in water. If the density of a substance is less than the density of water, it will float on water.
How can you tell platinum?
If you are in a physics class, the answer is to float it in water and determine its density. In real life, take it to a jewelry store.
How are mass and volume related to the sinking and floating of an object?
Mass and volume are related to the sinking and floating of an object through their density. An object will sink if its density is greater than the density of the fluid it is placed in, and will float if its density is less than the density of the fluid. The relationship can be expressed as density = mass/volume.
Is the density of 8ml of water the same as the density of 4ml of water?
Yes, the density of water is constant regardless of the volume. Therefore, the density of 8ml of water is the same as the density of 4ml of water.
How is water used in Density?
The density of water is 1.
Density of a pot of water?
The density of water is 1.0
Why is density needed to know whether a substance will float or sink in water?
It's actually pretty easy. If the density of the substance is higher than the density of water, the object will sink. If the density of the substance is lower than the density of water, the object will float. Be aware though that various substances may have dissolved into the water, thus changing its density. For example, seawater has a different density than fresh water.
When you compare the density of water or air with another object how can you tell which has the lower or higher density?
-- If the object floats in water, then its density is less than the density of water. -- If the object sinks in water, then its density is more than the density of water. -- If the object floats in air, then its density is less than the density of air. -- If the object sinks in air, then its density is less than the density of air.
Is the density of 1.00L of water greater than the density of 1.00qt of water?
No, the density of water is a constant property regardless of volume. Therefore, the density of 1.00L of water is the same as the density of 1.00qt of water.
What can you say about the density of a paper clip versus the density water?
The density of a paper clip is greater than the density of water. This means that a paper clip will sink in water as it is more dense than water.
How is water density affected by freezing?
The density of ice is lower than the density of water.
What is the number that compares an objects density to the density of water?
That is the specific gravity of the substance.
