CHEM 1E Metal

Which of the following describes a metal's ability to be hammered or pressed without breaking?

• Conductivity

• Malleability

• Ductility

• Luster

What property allows metals to be drawn into thin wires?

• Conductivity

• Malleability

• Ductility

• Density

Why do metals have good electrical conductivity?

• Because of tightly packed atoms

• Due to the presence of free-moving electrons

• Because of their high melting points

• Due to high atomic numbers

An alloy is best described as:

• A mixture of two or more metals only

• A combination of a metal and non-metal

• A material composed of metals or metals with non-metals that are mixed by fusion or deposition

• A material that is always harder than its base metal

Which type of alloy involves atoms occupying spaces between solvent atoms?

• Substitutional alloy

• Interstitial alloy

• Heterogeneous alloy

• Intermetallic compound

The property of metals that gives them a shiny appearance is called:

• Malleability

• Conductivity

• Luster

• Density

Which of the following statements is true about metallic bonds?

• They are weak bonds between metal atoms.

• They involve free electrons that allow metals to conduct electricity.

• They make metals brittle and prone to breaking.

• They prevent metals from being ductile.

An intermetallic compound differs from other alloys because:

• It has a variable composition.

• It is often less brittle than substitutional alloys.

• Its atoms are ordered rather than randomly distributed.

• It always has lower melting points than its component metals.

Which test is typically used to determine a metal's resistance to deformation?

• Thermal conductivity test

• Tensile test

• Electrical conductivity test

• Hardness test

Which of the following is an example of an interstitial alloy?

• • Brass (Cu and Zn)

• • Bronze (Cu and Sn)

• • Steel (Fe and C)

• • Solder (Sn and Pb)