Sugar crystals are a solid form of sucrose.
salt
Ummm... Really? Sugar crystals... Taste great!
salt
Crystal
In Britain it is known as "candyfloss".
Powdered sugar crystal
A crystal is defined in science as the product of two or more elements which combine in a chemical reaction to form a solid compound. Sugar is composed of 3 elements: Carbon, Hydrogen and Oxygen. Then chemical formula is C6H12O6 (6parts Carbon, 12 parts Hydrogen, 6 parts Oxygen) So yes, Sugar is a crystal. Salt is also a crystal.
Oxygen is has a cubic crystalline form and sugar im still trying to find online myself.
Yes, Powdering of sugar is a physical change. Grinding of sugar and it becomes a powder form hence powdering of sugar is a chemical property because it cannot be converted back into crystal form. This physical changes that are irreversible.
Crystal
A diamond is one form of carbon crystal. However many other substances form crystals under the right conditions. Sugar, salt and emeralds are all examples. So, a diamond is a crystal, but a crystal doesn't have to be a diamond.