Quiz on Metallic Bonds Reading

When talking about metallic bonds, the "electron sea" refers to what?

• The 'electron sea' refers to the delocalized electrons that are free to move around in a metallic bond.
• The 'electron sea' is the outer shell of metal atoms that remain stationary.
• The 'electron sea' refers to the fixed electrons in a metallic bond.
• The 'electron sea' describes the ionic bonds formed between metals and non-metals.

A metallic bond is the electrostatic attraction between...

• the positively charged metal ions and the sea of delocalized electrons
• the bonding of metal ions with fixed electrons
• the repulsion between metal ions and electrons
• the attraction between metal atoms and non-metal atoms

What is an example of a conductive nonmetal mentioned in the text?

• Diamond

• Graphite

• Silicon

• Sulfur

What overlaps in the outer energy levels of metal atoms?

• The d and f orbitals

• The s and p orbitals

• The p and d orbitals

• The s and d orbitals

In reference to metallic bonds and the sea of electrons, why are metals excellent electrical conductors?

• Metals conduct electricity due to their high melting points.
• Metals are insulators because they have tightly bound electrons.
• Metals conduct electricity by trapping electrons in fixed positions.
• Metals are excellent electrical conductors because their sea of free electrons allows for easy movement of electric charge.

What is the effect of the sea of electrons on the properties of metals?

• It makes metals non-conductive

• It results in specific properties of metals

• It causes metals to dissolve in water

• It makes metals brittle

What is the reason metals are malleable?

• Strong covalent bonds

• Free movement of electrons

• High density

• Low boiling point

What characteristic of metals gives them a shiny appearance?

• High density

• Metallic luster

• Low melting point

• Strong covalent bonds

What determines the melting point of a metal?

• Density of the metal

• Strength of metallic bonds

• Color of the metal

• Size of the metal atoms

At what temperature does magnesium boil?

• 649°C

• 883°C

• 1107°C

• 1535°C