What is the hardest mineral?
Diamond
What has a density of 18?
Density of Elements Chart
| Density | Name | # |
|---|---|---|
| 1.429 g/L | Oxygen | 8 |
| 1.696 g/L | Fluorine | 9 |
| 1.7824 g/L | Argon | 18 |
| 3.214 g/L | Chlorine | 17 |
Is Obsidian a real thing?
obsidian, igneous rock occurring as a natural glass formed by the rapid cooling of viscous lava from volcanoes. Obsidian is extremely rich in silica (about 65 to 80 percent), is low in water, and has a chemical composition similar to rhyolite.
Which stone is not drown in water?
Pumice stone
Which is less dense oil or water?
Oil is more dense than alcohol, but less dense than water. The molecules that make up the oil are larger than those that that make up water, so they cannot pack as tightly together as the water molecules can. They take up more space per unit area and are less dense.
Do bigger stones have higher density?
Less Dense, More Dense If something is heavy for its size, it has a high density. If an object is light for its size it has a low density. A pebble is heavy for its size, compared to a piece of popcorn which is light for it’s size.
Does less dense float or sink?
Density is a measure of how heavy something is compared to its size. If an object is more dense than water it will sink when placed in water, and if it is less dense than water it will float.
Is vinegar more dense than water?
Water has a density of about one gram per cubic centimeter (depending a little on temperature and pressure). Household vinegar consists almost entirely of water, but with some acetic acid molecules dissolved in it. In general, dissolving stuff in water makes it more dense, making vinegar the densest of the three.
What is the most dense gas?
Tungsten Hexafluoride
Can a solid be less dense than air?
There’s no solid material with a density less than standard atmospheric density air on Earth. The primary reason for this is that air is, even for a gas, pretty low density.