Elements, compounds, atoms and molecules

This task is about atoms, elements, compounds, and mixtures.
A B C D E

a)
Use the boxes above to answer these questions.
 
  i)
Name a box that contains an element.
 
 
A   B   C   D   E (Circle one)
 
  ii)
Which box contains a compound?
 
 
A   B   C   D   E (Circle one)
 
  iii)
Which box contains a mixture of elements?
 
 
A   B   C   D   E (Circle one)
 
Four words that can be used when describing substances are written in the box below.
 
 
elements          compounds          atoms          molecules
 
b)
 
Use these words to explain the difference between
 
i)
box B and box D.
 
 
 
 
ii)
box A and box B.
 
 
 
 
 
c) Using symbols like those in boxes A to E, draw a diagram below to show a box containing two different types of compounds.