Unit 2 (Part 1) Bonding Review

Ionic bonds occur between 2 elements that have a large difference in electronegativity, such as a metal and a nonmetal. When an ionic bond forms, the ____ loses electrons.

Oxygen has a -2 charge when it forms an ion because it ________ electrons.

• gains

• loses

Describe what occurs with the electrons in an ionic bond:

• Electrons are shared equally between atoms
• Electrons are not involved in the bonding process
• Electrons are completely transferred from one atom to another
• Electrons are partially transferred from one atom to another

Describe what occurs with the electrons in a covalent bond:

• Electrons are shared between atoms
• Electrons are transferred from one atom to another
• Electrons are removed from the atoms
• Electrons are not involved in the bonding process

Describe what occurs with the electrons in a metallic bond:

• Electrons are shared between atoms
• Electrons are transferred from one atom to another
• Electrons are free to move and create a 'sea' of electrons
• Electrons are immobile and tightly bound to their atoms

Ionic bonds occur between 2 elements that have a large difference in electronegativity, such as a metal and a nonmetal. When an ionic bond forms, the _______ gains electrons.

According to the octet rule, elements forming covalent bonds do so to attain how many valence electrons?

• Seven (7)

• Four (4)

• Two (2)

• Eight (8)

Define malleable.

• Capable of being hammered into sheets/foil/leaf

• A type of metal
• A type of rock
• A type of gas

Define ductile.

• Able to be drawn out into a thin wire
• A type of duct tape
• A type of metal
• A type of fabric

Define conductivity.

• The measure of a material's ability to conduct heat
• The measure of a material's ability to conduct electricity
• The measure of a material's ability to conduct light
• The measure of a material's ability to conduct sound