Chemical Reactions and Bonding Quiz

What type of bond is formed when electrons are shared between atoms?

• Ionic

• Covalent

• Metallic

• Hydrogen

Which of the following elements typically forms covalent compounds?

• Oxygen

• Sodium

• Magnesium

• Potassium

The number of covalent bonds an atom forms is determined by its need to:

• Lose electrons

• Gain electrons

• Share protons

• Release energy

The oxidation number of fluorine in all compounds is:

• +1

• -2

• -1

• 0

Which of the following compounds is correctly named?

• KCl - Potassium chloride

• Li₂S - Lithium sulfide

• Na₂O - Sodium peroxide

• CaCO₃ - Calcium dioxide

A reaction in which one or more electrons are transferred is called a:

• Precipitation reaction

• Redox reaction

• Acid-base reaction

• Displacement reaction

Oxidation refers to:

• Loss of electrons

• Gain of electrons

• Formation of ionic bonds

• Decrease in oxidation state

Reduction refers to:

• Loss of electrons

• Gain of electrons

• Increase in oxidation state

• Release of protons

In the reaction: Zn + Cl₂ → ZnCl₂, which species is oxidized?

• Zn

• Cl₂

• ZnCl₂

• None

Which of the following is an oxidizing agent?

• O₂

• Mg

• H₂

• Na