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MATERIALS AND THEIR PROPERTIES

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  • A very ductile material changes shape without breaking. True or false?
    true
  • A /an ___________________is a material that does not conduct electricity or heat easily due to its high electrical resistance or low thermal conductivity.
    insulator
  • The ability of a material to resist deformation and return to its original shape when a force is removed is called________
    Elastic limit
  • Glass is an excellent electrical insulator. True or false?
    True
  • Rebar is wood used for constructing building. True or false?
    False. Lumber is used for construction
  • The measure of a material's resistance to scratching, abrasion, or penetration by another material or object.
    Hardness
  • The energy-absorbing capacity of a material, which allows it to deform plastically and absorb impact without breaking.
    Toughness
  • Polymer is a mixture of metal and another material. True or false?
    False. It is an alloy
  • Aluminium is not malleable. True or false?
    False. It's malleable
  • Dirt, wood and water are all _____________materials
    natural
  • The property of a material to reflect light and shine with a polished or shiny surface
    Luster
  • Copper is not malleable. True of false?
    False. It is a high malleable material
  • Lumber is an artificial susbstance developed in labs. True or false?
    False. It is a natural material
  • Polymers are classified into___________and____________
    natural and artificial
  • Ceramics are hard material that do not melt. True or false?
    True
  • The translation of "wear resistence" is_____________
    resistencia al desgaste
  • Steel is strong material made of iron and carbon. True or false?
    true
  • Rebar is made of ceramics. True or false?
    False. It is made of metal
  • The maximum stress a material can endure without permanent deformation or breaking is _________________
    Yield strength
  • Steel has a low melting point. True lr false?
    False. Its melting point is high
  • Rubber is resistant to abrasion. True or false
    True
  • Concrete is used to make cars. True or false?
    False. It is used for building construction
  • Aluminium has a low melting point. True or false?
    true
  • Lumber has an excellent electrical conductivity. True or false?
    False. It's a natural insulator