Bonding: Ionic and Covalent

What is the primary difference between ionic and covalent bonds?

• A) Ionic bonds involve the sharing of electrons, while covalent bonds involve the transfer of electrons.

• B) Ionic bonds involve the transfer of electrons, while covalent bonds involve the sharing of electrons.

• C) Both involve the sharing of electrons.

• D) Both involve the transfer of electrons.

In an ionic bond, electrons are (a)   .

• shared equally

• transferred from one atom to another

• shared unequally

• not involved

Covalent bonds are typically formed between ____. A) metals and nonmetals B) nonmetals C) metals D) noble gases

• metals and nonmetals

• nonmetals

• metals

• noble gases

Which of the following is a characteristic of covalent bonds?

• A) Formation of ions

• B) High electrical conductivity

• C) Low melting and boiling points

• D) Formation of crystals

Match the following concepts with their descriptions: Giving electrons, Taking electrons, Sharing electrons.

• 2-A

• Compounds are neutral

• 1-A

• Atoms form compounds by this method

• 3-A

• Positive and negative charges balance

Ionic bonds are formed between . A) Atoms B) Molecules C) Ions D) Neutrons. Answer: .

• Atoms
• Molecules

• Ions
• Neutrons

What type of bond is present in LiF?

• Covalent

• Ionic

• Metallic

• Hydrogen

What color crystals do main group metals form?

• White

• Red

• Blue

• Green

Ionic compounds have a high melting point because of their (a)   structure.

• amorphous

• crystalline

• liquid

• gaseous

The written formula of an ionic compound is the smallest ratio of cation to anion called a (a)   . A) Molecule B) Formula unit C) Atom D) Ion.

• Molecule

• Formula unit

• Atom

• Ion