Odpowiedź:
1.In present carbon exist most in the form of combined substances
2. Carbon no definite crystalline, but amorphous shape
3. Diamonds are prepared by subjecting carbon containing synthetic compounds to high temperaturę and pressure
4.Graphite is remarkable for its softness as diamong is for its hardness
5. Charcoal is ordinary active at all temperatures and ordinary insoluble in all solvents
Wyjaśnienie: