Question

The diagram below shows the relationship between the physical states of matter.

1. Identify the processes B and D. 
   1. B
   2. D
2. Name process A 
3. State two substances in chemistry that undergo the process A 
4. Is the process E exothermic or endothermic? Explain 

Answer 1

1. 1. B - Melting 
   2. D - Condensation
       
2. Name process A 
   • Sublimation 
      
3. State two substances in chemistry that undergo the process A 
   • Iodine 
   • Ammonium chloride 
   • Solid ice 
   • Iron (III) chloride
   • Aluminum chloride 
      
4. Is the process E exothermic or endothermic? Explain 
   • Exothermic 
   • Involves heat loss