Redox Reactions and Electron Transfer

What type of chemical reaction involves the transfer of electrons between atoms?

• Acid-base reactions

• Redox reactions

• Neutralization reactions

• Precipitation reactions

In a chemical reaction, what happens when a substance is 'reduced'?

• It loses electrons.

• It gains electrons.

• It loses protons.

• It gains protons.

What is the helpful phrase used to remember that 'Oxidation Is Loss' and 'Reduction Is Gain' of electrons?

• LEO GER

• RIG OIL

• OILRIG

• GER LEO

What is the oxidation number for any element when it is by itself, like calcium (Ca) or hydrogen gas (H2)?

• +1

• -1

• 0

• +2

What happens during a redox reaction?

• Electrons are created

• Electrons are destroyed

• Electrons move from one atom to another

• Atoms change their identity

What is the main product formed in the Haber process?

• Oxygen

• Ammonia

• Water

• Carbon Dioxide

What is reduction in a chemical reaction?

• Gaining electrons

• Losing electrons

• Becoming a liquid

• Becoming a gas

What is oxidation in a chemical reaction?

• Gaining electrons

• Losing electrons

• Becoming a gas

• Becoming a solid