Classifying Solids

What are the basic particles in ice crystals?

• anion

• cation

• molecules

• atoms

The type of solid held together by bonds in which valence electrons move throughout the solid material is known as:

• amorphous solids

• covalent solids

• metallic solids

• ionic solids

KCl is

• a metallic network

• an ionic substances

• a polar covalent substances

• a non polar covalent substances

What makes the molecular crystals solid at low temperature?

• sharing of electrons

• transfer of electrons

• vanderwaals force

• delocalisation of electrons

Which of the following is an example of metallic crystal solid?

• carbon

• silicon

• copper

• silver chloride

Which forms a crystal of NaCl

• NaCl molecules

• Na and Cl atoms

• Na⁺ and Cl^- ions

• none of these

Iodine crystals are

• ionic crystals

• molecular crystals

• metallic crystals

• covalent crystals

Which of the following statement is false for ionic solids?

• ionic solids are soluble in polar solvents

• cation and anion moves to respective electrodes

• they have weak electrostatic force of attraction

• conduct current in molten state

1.Graphite and diamond are

• Covalent and molecular crystals

• ionic and covalent crystals

• both covalent crystals

• both molecular crystals

Solid CO2 is an example of

• Covalent solid

• metallic solid

• molecular solid

• ionic solid