Chapter 2b Properties of non-metallic substances

Where are the nonmetals located on the periodic table? 

• Blue
• Red
• Green

Substances that conduct electricity as a solid or a liquid must contain charged particles that are free to move.

• True

• False

A solid substance is an excellent conductor of electricity. The chemical bonds in this substance are most likely?

• ionic, because the valence electrons are shared between atoms
• covalent, because the valence electrons are mobile
• metallic, because the valence electrons are stationary
• metallic, because the valence electrons are mobile

The non-metallic substances in this table are

• NH₃, Cu & CuCl₂

• N₂O, NaCl & H₂O

• NH₃, N₂O & H₂O

• Cu, CuCl₂ & NaCl

The property/properties that best distinguish the non-metallic substances from other substances is/are

• Melting Point

• Boiling point

• Conductivity as a solid

• Conductivity as a liquid

The fact that water, H₂O, does not conduct electricity as a solid or a liquid is because

• it contains ions but they cannot move.

• it contains delocalised electrons but they cannot move.

• it contains neither delocalised electrons or ions.

• it contains both ions & delocalised electrons but they cannot move.

A substance which has a high melting point, conducts electricity when dissolved in water, and has a crystalline structure probably has what type of bond?

• Ionic
• Metallic
• Non-metallic

• Crystalline

A solid substance is soft, has a low melting point and is a poor conductor of electricity. The substance is most likely

• an ionic compound.

• a metallic solid.

• a network solid.

• a non-metallic solid.

When water is boiled the bonds being broken are

• joining bonds.

• water bonds.

• intramolecular bonds.

• intermolecular bonds.

Glucose has the molecular formula C₆H₁₂O₆. This means that glucose molecules can have any number of C, H & O atoms so long as they fit the same ratio. For example, glucose can be C₆H₁₂O₆, CH₂O or C₃H₆O₃.

• True

• False