7_4_Review

Why are metals good conductors of electricity?

• Metals have a surplus of protons.

• Metals have a sea of delocalized electrons.

• Metals repel electricity.

• Metals contain insulating materials.

Define ductility in relation to metals.

• Ductility in relation to metals is the ability of a metal to deform under tensile stress without breaking.

• Ductility is the ability of a metal to resist corrosion

• Ductility is the ability of a metal to conduct electricity

• Ductility is the ability of a metal to change color under heat

Explain the concept of malleability in metals.

• Malleability is the ability of metals to change color when exposed to heat.

• Malleability is the property of metals that makes them magnetic.

• Malleability is the characteristic of metals that allows them to conduct electricity.

• Malleability in metals is the property that allows them to be hammered, pressed, or rolled into thin sheets without breaking.

How does the presence of delocalized electrons contribute to the properties of metals?

• Delocalized electrons in metals contribute to high electrical conductivity, thermal conductivity, and malleability.

• Delocalized electrons in metals contribute to high rigidity.

• Delocalized electrons in metals contribute to low thermal conductivity.

• Delocalized electrons in metals contribute to low electrical conductivity.

What is the significance of alloys in the manufacturing industry?

• Alloys combine desirable properties of different metals for specific applications.

• Alloys are only used for decorative purposes in the manufacturing industry

• Alloys do not provide any advantages over pure metals in the manufacturing industry

• Alloys are not used in the manufacturing industry

How does the arrangement of atoms in a metal contribute to its ductility?

• The arrangement of atoms in a metal allows layers to slide past each other easily.

• The arrangement of atoms in a metal causes them to repel each other

• The arrangement of atoms in a metal leads to increased brittleness

• The arrangement of atoms in a metal makes it harder for layers to move

Explain the concept of electrical conductivity in metals.

• Electrical conductivity in metals is the ability to change shape under pressure.

• Electrical conductivity in metals is the property that allows them to conduct heat.

• Electrical conductivity in metals is the ability to conduct electricity due to the presence of delocalized electrons.

• Electrical conductivity in metals is the property that makes them magnetic.

Explain the role of crystal structure in determining the properties of metals.

• The crystal structure of metals affects properties like strength, ductility, and conductivity.

• Crystal structure has no impact on the properties of metals.

• Crystal structure only affects the color of metals.

• Crystal structure makes metals less malleable.