Unit 4 Pretest: Bonding and Properties

This picture represents which type of alloy?

• Interstitial

• Substitutional

• Covalent

• Ionic

Tags

NGSS.HS-PS1-3

Choose the compound that WOULD conduct electricity when dissolved in water.

• SCl₆

• CaCl₂

• CO₂

• C₆H₁₂O₆

Which would you infer has a low boiling point?

• CuO

• CH₄

• CaCl₂

• Ba₃N₂

True or False: Ionic compounds are brittle because the strong attractive forces hold the layers in relatively fixed positions.

• true

• false

Metals have mobile...

• cations

• anions

• valence electrons

• protons

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NGSS.HS-PS2-5

Substances that exhibit metallic bonding...

• are good conductors of electricity

• have low boiling points

• are brittle

• do not conduct heat

Which substance would NOT be soluble in water?

• BaF₂

• FeO

• I₂

• NaCl

True or False: Ionic compounds conduct an electric current when melted.

• True

• False

Ionic compounds typically exist in which state of matter?

• solid

• liquid

• gas

Tags

NGSS.HS-PS1-3

Compare to covalent compounds, the melting point of ionic compounds is...

• high

• low

• the same