solids

Multiple Choice

Which of the following best describes a crystal lattice in solids?

• A regular, repeating arrangement of particles

• A random arrangement of particles

• A loosely packed structure

• A structure with no definite shape

Multiple Select

Which of the following are characteristics of amorphous solids?

• They have a regular crystal structure.

• They have a definite volume and shape.

• They are classified as viscous or slowly flowing liquids.

• Their particles do not form a fixed crystalline pattern.

Multiple Choice

What happens to the particles in a solid when it is heated?

• They move closer together and the solid contracts.

• Their kinetic energy increases and they move farther apart.

• They lose energy and stop vibrating.

• They change into a liquid immediately.

Multiple Choice

Which of the following statements about the coefficient of linear expansion is correct?

• It is equal to the change in volume of a solid divided by its original volume and the change in temperature.

• It is equal to the change in length of a solid divided by its original length and the change in temperature.

• It is the same for all materials.

• It is measured in meters.

Multiple Choice

A metal bar is 1.60 m long at room temperature (21°C). It is heated to 84°C and becomes 1.7 mm longer. What is the coefficient of linear expansion for this material?

• 1.7 × 10⁻⁵ m°C⁻¹

• 1.06 × 10⁻⁵ m°C⁻¹

• 2.5 × 10⁻⁵ m°C⁻¹

• 8.2 × 10⁻⁶ m°C⁻¹

Multiple Choice

What is a bimetallic strip typically made of?

• Copper and aluminum

• Brass and iron

• Steel and copper

• Iron and steel

Multiple Select

Which of the following statements about bimetallic strips in thermostats are correct?

• They bend when heated due to different expansion rates of metals.

• They are made of two strips of the same metal.

• They help make or break an electric contact based on temperature changes.

• They remain straight regardless of temperature.

Open Ended

Describe the difference between crystalline and amorphous solids, and give an example of each.