Practice Questions chemistry for forensics 09

Practice Questions

Atomic Structure and bonding.

1. Using appropriate diagram(s) describe the structure of an atom? (200 words)

2. Describe the electronic configuration (s, p, and d notation) of carbon, sodium, and chlorine (100 words)

3. Explain how the following different types of bonds are formed, using specific examples of compounds to illustrate your answer.

(i) ionic bonding

(ii) covalent bonding

(iii) metallic bonding                     (300 words)

Organic chemistry

4. 
   

   Explain sp hybridisation in alkanes (100 words)

4. 
   

   Using appropriate diagrams, describe isomerism in organic compounds

1. 
   

   Positional isomerism

   
   
2. 
   

   Functional group isomerism

   
   
3. 
   

   Geometric isomerism

   
   
4. 
   

   Optical isomerism         (400 words)

6. Describe the classification of organic compounds according to their functional groups (use three examples to illustrate your answer) (300 words)

7. Explain how you would use chemical tests to identify the following unknown compounds from a crime scene paying particular attention to their chemical reactions.

(i) alcohols

(ii) aldehydes (carbohydrates, substance of abuse)

(iii) Proteins (DNA? chemical tests)             (300 words)

8. Describe polymerisation of organic compounds and their uses in industry (addition and condensation polymerisation) (400 words)

9. Using specific examples, explain combustion, cracking and halogenations in organic compounds (500 words)

Equilibrium and energetics

10 Explain how temperature, catalyst, concentration, pressure affect the rate of reactions (400 words)

11. Exothermic and endothermic reactions – compare and contrast these reactions

(table will be the best)

12. 
    

    Explain how pressure, temperature, volume, concentration will affect the dynamic equilibrium of reversible chemical reactions. (500 words)

    
    
13. 
    

    Describe three methods of determining or calculating enthalpy change of chemical reactions (use combustion as an example) (500 words)

    
    
14. 
    

    What is weak acid or weak base? (50 words)

    
    
15. 
    

    Calculate the pH of an acid with a concentration of 2.36 x 10^-4 M

 

Radioactivity

 

16. Explain the formation of isotopes in atoms? (100 words)

17. Explain alpha, beta and gamma radiation (200 words)

18. Explain the uses of radiation in medical sciences (400 words)

19. Describe nuclear fission and fusion (400 words)