1. Differentiate between graphite and diamond.
 
Answer variants:
Each carbon has four covalent bonds.
It has planar layers of hexagon units.
  
Diamond -
Graphite -
 
2. Write down all possible isomers of \(C_4H_1{_0}\).
 
Organic compounds have the same molecular formula, but the different structural arrangements of atoms in their molecules are called .
 
Butane has the chemical formula \(C_4H_1{_0}\) because it is a four-carbon alkane.
Butane has two isomers; .