Understanding Hydrogen Reactions

What is the most common element in the universe?

• Nitrogen

• Hydrogen

• Carbon

• Oxygen

What are radicals in the context of chemical reactions?

• Stable molecules

• Inert gases

• Molecules with unpaired electrons

• Molecules with paired electrons

What happens when a radical oxygen atom meets an H2 molecule?

• It remains unchanged

• It forms a stable water molecule

• It forms a hydrogen peroxide molecule

• It creates two new radicals: H and HO

What is a key safety concern when producing hydrogen at home?

• It is a solid at room temperature

• It is highly flammable

• It is non-toxic

• It is non-reactive

What materials are needed to produce hydrogen at home?

• Aluminum foil and drain cleaner

• Salt and sugar

• Iron and water

• Copper and vinegar