Covalent and Ionic Properties

Front

What is a covalent compound?

Back

A covalent compound is a chemical compound formed by the sharing of electrons between atoms, typically nonmetals, resulting in the formation of molecules.

Front

What is an ionic compound?

Back

An ionic compound is a chemical compound formed by the electrostatic attraction between positively charged ions (cations) and negatively charged ions (anions), usually involving a metal and a nonmetal.

Front

What are the typical boiling points of covalent compounds?

Back

Covalent compounds generally have low boiling points compared to ionic compounds.

Front

What are the typical melting points of covalent compounds?

Back

Covalent compounds usually have low melting points, often below 200°C.

Front

What is the physical state of most covalent compounds at room temperature?

Back

Most covalent compounds are found in a gaseous or liquid state at room temperature, and if solid, they are usually soft.

Front

What is a characteristic of ionic compounds regarding their hardness?

Back

Ionic compounds are typically hard and brittle due to the strong electrostatic forces between the ions.

Front

Do covalent compounds conduct electricity?

Back

Covalent compounds are generally non-electrolytes and do not conduct electricity in any state.

Front

What is the 'sea of electrons' model?

Back

The 'sea of electrons' model describes how metal ions are surrounded by a sea of delocalized electrons, allowing metals to conduct electricity and heat.

Front

What is the solubility of ionic compounds in water?

Back

Many ionic compounds are soluble in water due to the interaction between water molecules and the ions.

Front

What is the solubility of covalent compounds in water?

Back

Covalent compounds are often insoluble in water, especially if they are nonpolar.