Understanding Hydrogen and Its Reactions

What is the most common element in the universe?

• Nitrogen

• Hydrogen

• Oxygen

• Carbon

What are radicals characterized by?

• Paired electrons

• No electrons

• Extra protons

• Unpaired electrons

What happens when a single hydrogen atom with an unpaired electron interacts with an oxygen molecule?

• It forms a hydrogen peroxide molecule

• It remains unchanged

• It forms a water molecule

• It creates two new radicals

What is a potential outcome of the high-speed reaction process of hydrogen burning?

• Cooling effect

• Formation of carbon dioxide

• Formation of nitrogen gas

• Explosion

What should you be cautious of when producing hydrogen at home?

• It is a solid at room temperature

• It is non-toxic

• It is highly flammable

• It is non-reactive