Metallic Bonds and Comparisons

A metallic bond is formed when many metal atoms ___________.

• Share their pool of valence electrons

• Share covalent bonds between atoms

• Share ionic bonds between atoms

• Exchange neutrons

Why do metallic compounds conduct electricity as solids?

• valence electrons are mobile, allowing electricity to flow through the metal

• protons are mobile, allowing electricity to flow through the metal

A metallic bond is a bond between ________.

• nonmetals

• metals

• transition metals

• metalloids

Which of the following is NOT a property of metals?

• Hard

• Can conduct electricity

• Very brittle (breaks easily)

• Malleable (can bend without breaking)

What do electrons do in a metallic bond?

• They stay on the metal atom.

• They are transferred from atom to atom.

• They form a covalent bond with another atom.

• They float around freely.

Metals are shiny because ______________.

• The protons glow

• The valence electrons at the surface of the metal interact with the light

• The electrons are excited to a higher energy state

• The neutrons react with the free electrons

Which of the following would be held together by the metallic bond?

• Atoms of iron (Fe)

• Molecules of CH₄

• Atoms of sulfur (S)

• Units of NaCl

What are good conductors of electricity?

• covalent compounds

• metallic compounds

• ionic compounds (when dissolved)

• both 2 and 3

These 2 types of compounds have high melting and boiling points:

• covalent compounds

• ionic compounds

• metallic compounds

Ionic compounds are formed between______and __________.

• metals and metals

• metals and nonmetals

• nonmetals and metaloids

• nonmetals and nonmetals