Extracting Lead

The video explains how metals are often found in ores and demonstrates extracting lead from lead oxide using charcoal and a Bunsen burner. The process involves a chemical reaction where carbon reduces lead oxide to metallic lead. The video also discusses lead's properties, uses, and associated dangers.

What are ores primarily composed of?

• Synthetic materials

• Gaseous elements

• Metallic elements

• Organic compounds

In the lead extraction experiment, what is mixed with lead oxide?

• Sand

• Powdered charcoal

• Iron filings

• Sulfur

What indicates that a reaction is occurring during the lead extraction process?

• A loud noise

• A green smoke

• A red glow

• A blue flame

What is the role of carbon in the lead extraction process?

• It oxidizes lead

• It reduces lead oxide

• It evaporates lead

• It forms lead oxide

What gas is formed as a byproduct in the lead extraction process?

• Carbon dioxide

• Hydrogen

• Oxygen

• Nitrogen

Which property of lead makes it useful in blocking gamma radiation?

• Its high density

• Its resistance to corrosion

• Its low melting point

• Its softness

Why is the use of lead restricted in items like paint or water pipes?

• It is too expensive

• It is not durable

• It is poisonous to humans

• It is too heavy