Copper is a versatile element known for its unique color and excellent conductivity. It has been used since ancient times, notably in the Bronze Age, and is essential in electrical applications due to its affordability and efficiency. Copper is also prominent in architecture for its durability and resistance to corrosion. Various copper alloys, such as bronze and brass, have distinct properties and uses, including in musical instruments and jewelry. Copper compounds like copper sulfate and cupric oxide serve industrial purposes, including as fungicides and antibacterial agents.

What is the atomic number of copper?

• 27

• 28

• 29

• 30

Why is copper widely used in electrical connections?

• It is an excellent conductor of heat and electricity

• It is expensive

• It is not malleable

• It is a poor conductor of electricity

Which of the following is NOT a use of copper in modern applications?

• Fuel for cars

• Architecture

• Plumbing

• Electrical wiring

What is the main component of bronze?

• Copper and nickel

• Copper and silver

• Copper and zinc

• Copper and tin

Which copper compound is used as a fungicide and to purify water?

• Copper-zinc alloy

• Cupronickel

• Copper sulfate

• Cupric oxide