Exploring Conductivity and Matter Classification

What happens to the atoms inside an object when electricity or heat flows through it?

• They disappear.

• They stop moving.

• They move slowly.

• They move rapidly.

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Why are most metals considered good conductors of electricity and heat?

• They have a high melting point.

• They allow energy to flow through them easily.

• They are magnetic.

• They are very dense.

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Which metal is most commonly used in electrical wires due to its excellent conductivity?

• Copper

• Gold

• Iron

• Aluminum

What is an example of an electrical conductor that is not a metal?

• Glass

• Wood

• Salt water

• Plastic

Which of the following metals is a good conductor of thermal energy?

• Lead

• Aluminum

• Tin

• Zinc

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Why are most pots and pans made of stainless steel and aluminum?

• They are good conductors of heat.

• They are non-stick.

• They are cheap.

• They are lightweight.

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Which of the following is NOT an electrical insulator?

• Wood

• Glass

• Plastic

• Copper

Why are electric wires covered in a rubber or plastic coating?

• To make them look nice.

• To prevent energy from escaping.

• To make them more flexible.

• To increase conductivity.

What type of cup is often used to serve hot beverages to prevent burns?

• Metal cup

• Glass cup

• Styrofoam cup

• Plastic cup

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Why do most pots and pans have plastic or wooden handles?

• To make them more durable.

• To prevent heat transfer to the handle.

• To improve their appearance.

• To make them lighter.

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