Structure of Compounds and Bonds Test Review

Why do elements bond?

• To be friends

• To create a new element

• To become stable

• To get bigger

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

What kind of bond forms when atoms exchange electrons?

• ionic
• covalent
• artificial
• univalent

Which of the following describes covalent bonds?

• Bonds form because of opposite charges

• electrons are shared to fill outer electron shells

• Electrons are transferred between atoms

• Covalent bonds are magical

The chemical bond formed when two atoms share electrons is call a(n)

• covalent bond

• ionic bond

• metallic bond

• electron bond

Which pair of atoms will combine with each other and form an ionic bond?

• C and O

• B and H

• Ca and Mg

• Ca and Br

Which element is likely to gain electrons in a chemical reaction?

• Kr

• K

• Br

• Ca

Which formula represents a substance that contains a covalent bonds?

• LiCl

• CaCl₂

• K₂O

• CO₂

A regular, repeating arrangement of atoms, ions, or molecules is _____________.

• a compound

• a crystal

• a molecule

• a polyatomic ion