Quiz on Thermochromic Pigments and Smart Materials

How do thermochromic pigments react to heat?

• By melting

• By changing colour

• By expanding

• By shrinking

What is one application of thermochromic pigments in children's products?

• Children's books

• Children's cutlery

• Children's shoes

• Children's toys

What is the purpose of irreversible thermochromic pigments?

• To indicate a critical temperature has been reached

• To change colour back and forth

• To remain the same colour

• To dissolve in water

What is a characteristic of thermochromic pigments?

• They are always blue

• They respond to temperature changes

• They are magnetic

• They are waterproof

What is a benefit of using photochemical film on glass office buildings?

• Reduces noise

• Changes colour with light

• Increases heat

• Emits fragrance

At what temperature does Polymorph become mouldable?

• 42°C

• 50°C

• 62°C

• 72°C

What is the appearance of Polymorph?

• Bright red pellets

• Off-white mouldable pellets

• Transparent liquid

• Solid black blocks

What is Coolmorph?

• A type of metal

• A lower temperature version of Polymorph

• A type of fabric

• A type of glass

What happens to QTC when no pressure is applied?

• It becomes a conductor

• It becomes an insulator

• It melts

• It changes colour

What is a common use of piezoelectric materials in everyday devices?

• Mobile phone speakers

• Solar panels

• Water heaters

• Refrigerators