Metallic, ionic, molecular structure diagrams

Which diagrams are solids?

Select all that apply

• A

• B

• C

• D

• E

Which diagrams are liquids (pure or solutions)?

Select all that apply

• A

• B

• C

• D

• E

Which structures would conduct electricity?

Select all that apply.

• A

• B

• C

• D

• E

Which structures contain ions?

Select all that apply

• A

• B

• C

• D

• E

Which structures contain free (delocalised) electrons?

Select all that apply

• A

• B

• C

• D

• E

Which structures contain any electrons at all?

Select all that apply

• A

• B

• C

• D

• E

Which substances contain only molecules?

Select all that apply.

• A

• B

• C

• D

• E

Which substances contain positive and negative ions that attract one another?

Select all that apply.

• A

• B

• C

• D

• E

Answer explanation

You might have thought the ions in the dissolved salt don't attract any more but any positive and negative charge will attract.

The trick is that the water molecules bash into (collide with) the ions, surround them ('solvate' them) and stop them sticking together even THOUGH they attract so strongly.

Which substances would conduct if they were solid?

Select all that apply.

• glucose

  C₆H₁₂O₆

• water

  H₂O

• aluminium

  Al

• sodium chloride

  NaCl

Which substances would conduct if they were a pure liquid (molten)?

Select all that apply.

• glucose

  C₆H₁₂O₆

• water

  H₂O

• aluminium

  Al

• sodium chloride

  NaCl