it is probablydiamond.considering how much force it takes to even scratch it even with another diamond,but I'm not a scientist so go on some science site before considering this ancer.
rocks arent all the same size and shape because of 2 reasons 1.they are formed diffeerently and 2.erosion
Sort of. The shape of crystals is the subject of the scientific field of crystal morphology, and the relationship of the shape of the unit cell (the "hexagonal crystal array" you're talking about) to the shape of the overall crystal is a lot more complicated than that.
it is not Well, it's a solid because you can punch it up all you want. It's also a semi-liquid in that it can rearrange it's shape to fit the container it's in / on. For example, a pizza crust, butter tart shell, bread pan, French bread stick pan.
The hydrosphere predominantly includes all liquid and solid water standing and flowing over and through the geosphere. The biosphere is made up of all organisms.
All forms of electromagnetic radiation travel through vacuums. No transmission medium is required. Some forms of EMR -- visible light, for example -- cannot pass through solid objects, however.
Shape
For gas and liquid, it took shape of what ever contain them. For solid, it took original shape of what ever contain them before freezing to solid or mold them to solid. The later shape of solid is due to what it suffer over time to shape it to existing shape.
A square I think.
An irregular polyhedron is a solid shape in which either all edges are not the same length, or all faces are not congruent polygons or all [solid] angles are not of the same measure.
A polygon with all sides and all angles equal.
Because a tetrahedron is a triangular based pyramid that has 4 identical faces and 4 faces meet at all the vertices.
Cells can take on a solid shape, have no shape at all, or change shapes.
A polyhedron.
A solid has a definite shape because the particles in a solid are tightly packed together and all fixed into one position to where they can only vibrate.
A solid has a definite shape, and a definite volume.
the difference between the an irregular and regular solids are that an irregular solid has sides that are not even and you cant measuer with a ruler and you can not measuer it exactly. a regular solid you can measure without a problem with a ruler.
They are not the same. If you pass a suspension through a filter paper, all the solid that was in suspension is left behind on the paper. A solution doesn't have any solid bits in suspension - it is all liquid. It will go through a filter paper without leaving any thing behind.