Bonding and Equations Test Revu

Why do elements bond?

• To be friends

• To create a new element

• To become stable

• To get bigger

What is a valence electron?

• The sum of neutrons and protons.
• The # of electrons in the last shell.
• A type of bond.
• A popular compound.

Ionic bonds are between...

• nonmetals and nonmetals
• carbon and oxygen
• metals and nonmentals
• hydrogen and chlorine

Covalent bonds are between...

• two or more nonmetals
• sodium and chlorine
• metals and metals
• metals and nonmetals

For metals (groups 1-3), its easier to _____ electrons to have a full outer shell.

• gain

• lose

• share

For nonmetals (grousp 5-7), its easier to _____ electrons to have a full outer shell.

• gain

• lose

• share

What is the formula of Sodium oxide?

• Na2O
• NaO₂
• Na₂O₂
• Na₂O

What is the correct formula for potassium oxide?

• KO₂

• KO

• K₂O

• OK₂

phosphorus trichloride

• KCl₃
• PCl₃
• K₃Cl
• P₃Cl

silicon dioxide

• SO₂
• NaO₂
• SiO₂
• SiO