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1. A compound with a higher boiling and melting point
2. It is soluble in water but they are insoluble in non-polar solvents.
3. They are harder and brittle,
4. Exists in all three phases/ forms; solids, liquids and gases at room temperature.
5. Its melting and boiling points are relatively low,
6. Exists as solids at room temperature and has a stable crysial structure.
7. These compounds are generally poor electrical conductors in all phases
8. Soluble in non polar solvents, but not in water.
9. NaCl and KCl are examples of this compound.
10. HCI and CH4 are examples of this compound.​


Sagot :

1. Hexane

2. Ionic Compounds

3. Metal

4. Water

5. Nitrogen

6. Silicon Carbide (SiC)

7. Covalent Compounds

8. Hydrocarbons

9. Ionic

10. Covalent

Explanation:

Hexane has the highest Boiling and Melting point along the Compounds if bit satisfied with my answer please feel free to search.

Ionic compounds are soluble in water just as Covalent are soluble in non polar solvents

Metal can be Brittle and Hard at the same time... if the steel/metal is tempered then it can be Hard and Brittle at the same time.

Water can be solid(ice) Liquid(Water itself) and Gas(steam) at the same time.

nitrogen has the lowest boiling and melting point I'd not satisfied with my answer then feel free to search.

Silicon Carbide is the only thing I can find that is Solid and Crystalline at the same time... if not satisfied with my answer then feel free to search.

Covalent Compounds are very poor electric conductors based on the Periodic table of elements if not satisfied with my answer feel free to search...

Overall, the attractions in the system after hexane and other hydrocarbon molecules move into the water are approximately equivalent in strength to the attractions in the separate substances. For this reason, little energy is absorbed or evolved when a small amount of a hydrocarbon is dissolved in water. To explain why only very small amounts of hydrocarbons such as hexane dissolve in water, therefore, we must look at the change in the entropy of the system. if not satisfied with my answer feel free to search.

Sodium chloride is an Example of Ionic.. feel free to search for confirmation

Hydrogen Chloride is an Example of Covalent.. feel free to search for confirmation.