How is called the density of any substance compared to the density of water?

Answer 1

Water's density is 1.

If an object floats, it's density is less than 1.

If an object sinks, it's density is greater than 1.

Specific Gravity can be calculated as:
(weight in air) / ((weight in air) - (weight in water))

Answer 2

Most substances become more dense when they solidify, because the same amount of particles are taking up a smaller amount of space, but ice is actually less dense than water, and so it floats on water.

---

Water's solid form is less dense than its liquid form, while the opposite is true of most other substances.

---

Substances that change phase from liquid to solid when cooled have lower molecular pressure, and are typically denser as solids than as liquids. Water also loses molecular energy as it turns into ice, but the presence of hydrogen bonds forms a solid lattice that takes up MORE space than the water molecules did --- so ice is less dense.

Answer 3

The density of substances are compared to water frequently because water at room temperature has a density of about 1g/ml, or 1 gram per milliliter. Since it has a density close to a whole number, it makes it easier to compare other materials to it. I hope that answered your question.

Answer 4

Most substances are more dense in solid form than in liquid form. Water is an exception. Ice is less dense than water, which is why ice cubes float.

Answer 5

The density of water is 1. That's different. Everything else is higher or lower.

Answer 6

The density of a substance is compared to the density of water so that we would know if the substance is less dense or if it is denser.

Answer 7

because water is the easiest thing to compare to, with only 1 g/cc.

Answer 8

The density of different substances are always compared to the density of water because water is considered a neutral substance since it has a density of 1g/ml.

Answer 9

The density of a substance compared to the density of water is called specific gravity.