¿Por qué a Estatua de la Libertad es verde?

The video explains the transformation of the Statue of Liberty from its original golden color to its current green hue due to chemical reactions. It discusses the nature of chemical reactions, using examples like a burning candle, and contrasts them with physical changes, such as melting ice cream. Over time, the statue's copper surface reacted with air and water, forming copper carbonate, which gives it the green appearance.

What was the original color of the famous statue when it was made in 1886?

• Silver

• Bronze

• Golden

• Green

Which of the following is an example of a chemical reaction?

• Melting ice cream

• Burning candle

• Breaking glass

• Boiling water

What does wax produce when it reacts with oxygen in the air?

• Water and carbon dioxide

• Oxygen and hydrogen

• Nitrogen and carbon dioxide

• Carbon monoxide and water

How is a chemical change different from a physical change?

• Chemical change involves new substances; physical change does not.

• Physical change involves new substances; chemical change does not.

• Both involve new substances.

• Neither involves new substances.

What new substance is formed when copper reacts with water and gases in the air?

• Copper chloride

• Copper carbonate

• Copper sulfate

• Copper oxide