Material Science

What is the process of converting a solid directly into a gas called?
Sublimation
Evaporation
Condensation
Melting
Which type of bond involves sharing electrons between atoms?
Covalent
Ionic
Metallic
Hydrogen
Which element has the atomic number 79?
Gold
Silver
Platinum
Copper
Which material is commonly used as a lubricant due to its low friction coefficient?
Graphite
Diamond
Silicon
Aluminum
Which type of polymerization involves the formation of a single chain of monomers?
Addition
Condensation
Radical
Anionic
Which type of crystal structure does diamond have?
Cubic
Tetragonal
Orthorhombic
Hexagonal
Which type of alloy is composed of two or more metals?
Intermetallic
Ceramic
Polymer
Composite
What is the process of removing impurities from metal called?
Refining
Smelting
Casting
Extrusion
Which type of material has a negative temperature coefficient of resistance?
Thermistor
Resistor
Capacitor
Inductor
Which type of polymer is commonly used in food packaging due to its high barrier properties?
Polyethylene terephthalate (PET)
Polypropylene
Polystyrene
Polyvinyl chloride (PVC)
Which type of bonding occurs between molecules with polar covalent bonds?
Hydrogen
Ionic
Covalent
Metallic
Which type of crystal structure does sodium chloride have?
Cubic
Tetragonal
Orthorhombic
Hexagonal
Which type of material is commonly used as a semiconductor in electronic devices?
Silicon
Aluminum
Copper
Gold
What is the process of heating a metal to a high temperature and then cooling it slowly called?
Annealing
Tempering
Quenching
Forging
Which type of polymerization involves the formation of water as a byproduct?
Condensation
Addition
Radical
Anionic
Which type of alloy is composed of one metal and one non-metal?
Interstitial
Substitutional
Ceramic
Composite
What is the process of adding atoms or molecules to the surface of a material called?
Deposition
Etching
Sputtering
Ion implantation
Which type of material is commonly used as a catalyst due to its high surface area?
Zeolite
Graphene
Carbon nanotube
Diamond
What is the process of heating a metal to a high temperature and then cooling it rapidly called?
Quenching
Annealing
Tempering
Forging
Which type of bonding occurs between molecules with non-polar covalent bonds?
Van der Waals
Ionic
Covalent
Metallic
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