Generally, liquids on Earth freeze into what we call ice, or sometimes snow or hail. All liquids have a certain temperature at which they will freeze but they are often referred to as ice once they are frozen.
liquid iron
No. Exactly the opposite. Water is the only known substance whose solid form floats in its liquid form. Which, incidentally, is a lucky accident, since life on earth would be impossible if ice sank in water.
When a substance changes from a frozen solid to a liquid, it undergoes the process of melting. This occurs when the temperature of the solid rises above its melting point, causing the solid structure to break down and transform into a liquid state.
So far as science can deduce, it must be a solid.
its liquid and it expands when frozen.
Because it is a frozen liquid, and since it is frozen it isn't liquid.
About 2%.
All of it All of it
Technically, none of it. The hydrosphere is the liquid water on Earth. The Cryosphere is the ice. However, only 3 percent of the water on Earth is fresh, 97 % is salt water. Of that 3 % frsh water, 85 % is frozen so 85% of 3% of the water is frozen. So, 2.55% of Earths water is frozen.
Less than 5%.
75%
75%
No Hydrogen is a gas and when frozen turns into a solid
No. It is a solid.
liquid iron
No. Exactly the opposite. Water is the only known substance whose solid form floats in its liquid form. Which, incidentally, is a lucky accident, since life on earth would be impossible if ice sank in water.
When you put frozen ethanol into liquid ethanol, the frozen ethanol will begin to melt and mix with the liquid ethanol. Both states of ethanol will reach an equilibrium temperature, and the frozen ethanol will ultimately dissolve into the liquid ethanol to form a homogeneous solution.