Chemical bonding

An ionic bond forms when atoms ___________ electrons.

• gain
• share
• increase
• transfer

Chemical bonds form when atoms

• combined nuclei
• give up neutrons
• gain protons
• share or transfer electrons

Bonds that form between two metals are called ______________ bonds.

• ionic 
• covalent
• metallic
• pervasive

If an atom loses two electrons what charge will it have?

• + 2
•  - 2
• +1
• -1

If an atom gains one electron what charge will it have?

• -2
• -1
• +1

Covalent compounds

• Share electrons
• transfer electrons
• contain a sea of electrons
• conduct electricity

What is the number of valence electrons for Oxygen?

• 8
• 6
• 2
• 1

What usually forms the positive ion?

• Metal

• Nonmetals

• None

What elements generally make an ionic bond?

• metal and nonmetal

• 2 or more nonmetals

• metal

• none of the above

What is a valence electron?

• an electron that is found in the outermost shell of an atom.

• an electron found in the innermost shell of an atom.

• an electron found in the middle shell.