It could be a lump of coal.
Since you can break pieces off, maybe charcoal ... the real thing, not a "briquet".
Do your hands get all black when you handle it ?
That would be cause part of the sodium is pure and that means it still kind of has it properties when it was an element and that its i think.
Explanation:
The geometric shape of this molecule is
D. tetrahedral
Hope it will help :)
Not all matter in the reactant goes to the product. Some matter is byproducts.
Hard to find out do to chemical change
