Chemical Bonds Practice

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

• covalent bond

• ionic bond

• metallic bond

• electron bond

Tags

NGSS.HS-PS1-1

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

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What is the oxidation number of oxygen in most compounds?

• 6

• -2

• 8

• 0

Tags

NGSS.MS-PS1-1

Which formula represents a substance that contains a covalent bonds?

• LiCl

• CaCl₂

• K₂O

• CO₂

Tags

NGSS.HS-PS1-1

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

• a compound

• a crystal

• impossible to break

• a polyatomic ion

How does an atom of aluminium become an ion?

• It gains 3 electrons

• It gains 3 protons

• It loses 3 electrons

• It loses 3 protons

How many electrons are shared within a single bond?

• 0

• 1

• 2

• 4

Which atoms are most likely to form covalent bonds?

• metal atoms that share electrons

• metal atoms that share protons

• nonmetal atoms that share electrons

• nonmetal atoms that share protons

The electrons that are lost, gained, or shared in chemical bonds are called ________________.

• valence electrons

• chemical electrons

• Lewis electrons

• none of the above

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2