Properties of Ionic and Covalent Compounds

Ionic compounds are usually formed from _____

• a metal and a nonmetal.

• two nonmetals.

• a metal and a metalloid.

• two metals.

What set of elements is most likely to form a covalent compound?

• Na and Cl

• O and C

• Mg and O

• Fe and S

What is the difference between ionic and covalent compounds in terms of electrical conductivity?

• Ionic compounds conduct electricity when dissolved in water, while covalent compounds do not conduct electricity.

• Covalent compounds conduct electricity when dissolved in water, while ionic compounds do not conduct electricity.

• Both ionic and covalent compounds conduct electricity equally well when dissolved in water.

• Ionic compounds do not conduct electricity in any state, while covalent compounds conduct electricity in solid state.

What is a polyatomic ion?

• A charged entity composed of two or more atoms bonded together, acting as a single unit in chemical reactions.

• A single atom with a positive charge.

• A molecule that contains only one type of atom.

• An ion that has no charge.

Which set of elements is most likely to form an ionic compound?

• Na and O

• Cl and Cl

• C and O

• H and He

Is the following compound ionic or covalent? A material that has a low boiling point

• Ionic

• Covalent

• Metallic

• Network

Give an example of a covalent compound.

• Water (H2O)

• Sodium Chloride (NaCl)

• Calcium Carbonate (CaCO3)

• Iron Oxide (Fe2O3)

How do you determine if a compound is ionic or covalent based on its formula?

• If the compound consists of a metal and a nonmetal, it is likely ionic.

• If the compound consists of two metals, it is likely ionic.

• If the compound consists of two nonmetals, it is likely ionic.

• If the compound consists of a metal and a metalloid, it is likely covalent.

What is the role of electronegativity in bond formation?

• Electronegativity has no effect on bond formation.

• Electronegativity determines how strongly an atom attracts electrons; a large difference in electronegativity between two atoms typically leads to ionic bonding.

• Electronegativity only affects covalent bonds.

• Electronegativity is the measure of an atom's size.

What are the typical properties of covalent compounds?

• Covalent compounds usually have high melting and boiling points, are solids at room temperature, and conduct electricity.

• Covalent compounds usually have low melting and boiling points, can be gases or liquids at room temperature, and do not conduct electricity.

• Covalent compounds usually have moderate melting and boiling points, are liquids at room temperature, and can conduct electricity.

• Covalent compounds usually have very high melting and boiling points, are gases at room temperature, and do not conduct electricity.