Alloy Quiz

What type of alloy is formed when smaller atoms fit into the spaces between larger atoms of the host metal, making the alloy harder and stronger?

• Substitutional alloy

• Metallic alloy

• Interstitial alloy

• Composite alloy

Answer explanation

An interstitial alloy is formed when smaller atoms fit into the spaces between larger atoms of the host metal, enhancing hardness and strength.

Which of the following properties can be altered by the formation of substitutional alloys?

• Color and texture

• Melting point and boiling point

• Electrical conductivity and corrosion resistance

• Transparency and opacity

Answer explanation

Substitutional alloys can alter properties like electrical conductivity and corrosion resistance due to the replacement of atoms in the crystal lattice structure.

What is a common example of a substitutional alloy?

• Stainless steel

• Carbon steel

• Brass

• Pewter

Answer explanation

Brass is a common example of a substitutional alloy, where different metal atoms replace some of the original metal atoms in the crystal lattice.

Which particle diagram, from left to right, illustrates a structure of an alloy?

• Particle diagram 1

• Particle diagram 2

• Particle diagram 3

• Both Particle diagrams 2 and 3

Answer explanation

Particle diagrams 2 and 3 illustrate the structure of an alloy because they show a mixture of different types of particles, representing the combination of different elements in an alloy.

Which particle diagram, from left to right, illustrates a structure of an interstitial alloy?

• Particle diagram 1

• Particle diagram 2

• Particle diagram 3

• Both Particle diagrams 2 and 3

Answer explanation

Particle diagram 3 illustrates the structure of an interstitial alloy, showing atoms of different sizes occupying interstitial spaces within the lattice.