Unit 3 Review #1

The electron sea models shows that, in metallic bonding, cations are in fixed positions, but valence electrons move freely throughout the lattice.

These freely moving electrons explain why metals -

• Form ionic compounds

• Accept electrons easily

• Are very reactive

• Are excellent conductors

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What is the formula of calcium permanganate?

What is the electron sea model?

• A model that describes the movement of metal cations

• A model that describes the fixed position of valence electrons

• A model that describes the interaction of valence electrons with non-metal atoms

• A model that describes the delocalized electrons surrounding metal cations

Which is the correct electron dot diagram for NH₃

• A

• B

• C

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Which name is matched to its formula correctly?

• Carbon tetrachloride

• Dinitrogen monoxide

• Nitrogen trioxide

• Diphosphorus pentoxide

What could be the formula for this compound?

• CH₄

• MgO

• CuO

• NaCl

Which is true about halogens (group 7A) as you go down a group?

Pick 2!

• Dispersion forces become stronger

• Dispersion forces become weaker

• because larger atoms have more electrons

• because larger atoms have more neutrons

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The name of the compound Sn(SO₄)₂ is -

• Tin Sulfate

• Tin (IV) Sulfate

• Tin (IV) Sulfite

• Tin Sulfite

Name this: (NH₄)₂O

• Ammonium oxygen

• Nitrogen hydroxide

• Nitrogen hydrogen oxide

• Ammonium oxide

Pick 2 correct answers.

• Ionic bonds: metal transfers electrons to nonmetal

• Ionic bonds: nometals share electrons.

• Covalent bonds: nometals share electrons.

• Covalent bonds: metal transfers electrons to nonmetal

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