Metals Quiz

Elements that have luster, are good conductors of heat and electricity, and are ductile and malleable.

• Metal

• Metalloid

• Non-Metal

Answer explanation

Elements that have luster, are good conductors of heat and electricity, and are ductile and malleable are classified as metals.

What property of metals allows them to be drawn into wires?

• Malleability

• Ductility

• Brittleness

• Opacity

Answer explanation

Metals can be drawn into wires due to their property of ductility, which allows them to be stretched into thin wires without breaking.

Which of the following is NOT a characteristic of metallic bonding?

• Sharing of free electrons among a lattice of metal atoms

• High melting and boiling points

• Low electrical conductivity

• Electrons are delocalized

Answer explanation

The correct choice is low electrical conductivity because metallic bonding is known for its high electrical conductivity due to the delocalized electrons.

Brass is an alloy made primarily of copper and which other element?

• Zinc

• Nickel

• Tin

• Aluminum

Answer explanation

Brass is primarily made of copper and zinc, making zinc the correct element in the alloy.

Bronze is an alloy made primarily of copper and which other element?

• Zinc

• Nickel

• Tin

• Aluminum

Answer explanation

Bronze is an alloy primarily made of copper and tin, not zinc, nickel, or aluminum.

Which metal is used extensively in the electrical industry due to its high conductivity?

• Iron

• Copper

• Lead

• Zinc

Answer explanation

Copper is extensively used in the electrical industry due to its high conductivity, making it an ideal metal for conducting electricity efficiently.

What is the primary reason alloys are created instead of using pure metals?

• To decrease the cost

• To improve the appearance

• To enhance the metal's properties

• To increase the weight

Answer explanation

Alloys are created to enhance the metal's properties, such as strength, durability, and corrosion resistance, which are often superior to those of pure metals.

Which of the following is a property of metals?

• High melting point

• Low density

• Poor conductor of heat

• Insoluble in water

Answer explanation

The property of metals that is described as having a high melting point is the correct choice.

What type of bond is formed between metal ions when they share a "sea of electrons"?

• Covalent bond

• Ionic bond

• Metallic bond

• Hydrogen bond

Answer explanation

Metallic bond is formed between metal ions when they share a 'sea of electrons', allowing for the free movement of electrons throughout the structure.

Which of the following uses of metals is incorrect?

• Aluminum in aircraft manufacturing due to its light weight

• Copper in plumbing due to its malleability

• Lead in drinking water pipes due to its non-toxicity

• Iron in construction due to its strength

Answer explanation

Lead is toxic and should not be used in drinking water pipes, making the statement incorrect.