Which of the following is NOT a physical property?

• Density

• Conductivity

• Reactivity

• Malleability

What does it mean if a material is ductile?

• It can dissolve in water.

• It can be hammered into thin sheets.

• It can conduct electricity.

• It can be twisted into thin wires.

What remains unchanged during a physical change?

• The chemical composition

• The temperature

• The color

• The phase

At what temperature does water start to boil and change into a gas?

• 50°C

• 0°C

• 100°C

• 150°C

What happens to the temperature of a substance during a phase change?

• It fluctuates randomly.

• It remains constant.

• It decreases rapidly.

• It increases rapidly.