Bonding Unit Test Practice

The chemical bond formed when two atoms share electrons is called a(n) (DOK 1)

• Covalent bond

• Ionic bond

• Metallic bond

Tags

NGSS.HS-PS1-1

Which pair of atoms will combine with each other and form an ionic bond? (DOK 2)

• C and O

• C and H

• Ca and Br

Which element is most likely to gain electrons in a chemical reaction? (DOK 2)

• Kr

• K

• Br

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What is the oxidation number of oxygen in most compounds? (DOK 2)

• 6

• -2

• 8

How does an atom of aluminum become an ion? (DOK 2)

• It gains 3 electrons

• It loses 3 electrons

• It gains 3 protons

Which atoms are most likely to form covalent bonds? (DOK 2)

• metal atoms that share electrons

• nonmetal atoms that share electrons

• metal atoms that share protons

The electrons that are lost, gained, or shared in chemical bonds are called _______. (DOK 1)

• valence electrons
• chemical electrons
• Lewis electrons

Which process is taking place in the diagram below? (DOK 2)

• Electron transfer

• Electron sharing

• Electron gain

How many electrons are needed in the outer energy levels of most atoms for the atom to be chemically stable? (DOK 1)

• 2

• 6

• 8

The properties of a compound are ____________ the properties of the elements that form it.

• Similar to
• Different from
• Derived from