Solids and their Properties

Krypton (Kr) is classified as what type of crystalline solid?

• metallic

• ionic

• molecular

• covalent network

Aluminum (Al) is classified as what type of crystalline solid?

• metallic

• ionic

• molecular

• covalent network

Potassium permanganate (KMnO₄) is classified as what type of crystalline solid?

• metallic

• ionic

• molecular

• covalent network

Hydrogen chloride (HCl) is classified as what type of crystalline solid?

• metallic

• ionic

• molecular

• covalent network

Graphite is classified as what type of crystalline solid?

• metallic

• ionic

• molecular

• covalent network

Calcium oxide (CaO) is classified as what type of crystalline solid?

• metallic

• ionic

• molecular

• covalent network

Silver is classified as what type of crystalline solid?

• metallic

• ionic

• molecular

• covalent network

Which of the following properties DOES NOT describe metallic crystalline solids?

• brittle

• malleable

• ductile

• good conductor of heat

Which of the following statements DOES NOT describe crystalline solids?

• They show regular shapes.

• Their structures are regularly arranged.

• They do not have sharp melting points.

• The ordered arrangement of their units maximizes the space they occupy.

Why is metallic crystalline solid a good conductor of electricity?

• Atoms are packed close together.

• Particles can move through the crystal.

• The charged particles move through the crystal.

• Strong attractive forces hold the atoms in the crystal.