Who am I? (Material finding competition)

What is the main component of the ink used in pen?

• Water

• Graphite

• Mercury

• Selenium

Which of the following metals is often used in fireworks to produce a green color?

• Copper

• Iron

• Barium

• Zinc

What is the lightest noble gas on the periodic table?

• Helium

• Neon

• Argon

• Xenon

What is the element with atomic number 101 called?

• Unnilbium

• Unnilunium

• Unununium

• Ununbium

Which crystal structure does table salt (Sodium Chloride) belong to?

• Hexagonal

• Orthorhombic

• Tetragonal

• Cubic

What is the main component of solar panels?

• Aluminium

• Silicon

• Iron

• Sulphur

Which of the following factors affects the hardness of a material?

• Temperature

• Density

• Elasticity

• All of the these

What is the unit of measurement for Young’s modulus?

• Newton (N)

• Pascal (Pa)

• Newton-meter (Nm)

• Joule (J)

Which material is commonly used for the production of safety helmets due to its impact resistance?

• Steel

• PVC

• Carbon fiber

• Polycarbonate

Which material property determines the ability of a material to absorb sound?

• Hardness

• Young's modulus

• Density

• Acoustic Impedance