Complete what decides the class of a material

Exercise and reference answers

Missing parts

1. Answer

   lattice

   Choices

   1. lattice
   2. crystal colour
   3. surface

2. Answer

   semiconductor

   Choices

   1. semiconductor
   2. liquid
   3. gas

Complete the statement

The {0} structure and the atomic structure of the constituent elements decide whether a material is an insulator, a metal or a {1}.

Explanation