1. Define the following ,
(i) Chemistry
(ii) Laboratory
(i) Chemistry
(ii) Laboratory
2. People who study chemistry are known
as ...................
3. Mention different material / objects
made by application of chemistry.
(i)..............................
(ii).............................
(iii).............................
(iv).............................
(v)..............................
(i)..............................
(ii).............................
(iii).............................
(iv).............................
(v)..............................
4. Mention the importance of chemistry in your
daily life.
(i)................................
(ii)...............................
(iii)...............................
(iv)..............................
(v)..............................
(i)................................
(ii)...............................
(iii)...............................
(iv)..............................
(v)..............................
5. (I) Define the word laboratory .
(II) Mention at least ten chemistry laboratory rules .
(II) Mention at least ten chemistry laboratory rules .
6. Mention and explain the safety measures needed
to avoid accidents in chemistry laboratory.
7. (i) Identify possible causes of
accidents in a chemistry laboratory
(ii) Mention all the items found in a first Aid kit.
(ii) Mention all the items found in a first Aid kit.
8. Give the names of three apparatus
used in a chemistry laboratory in each of the following below;
a) (i)Apparatus for holding thing_________,____________,_____________.
(ii)Apparatus for taking measurements_________,____________,_________.
(iii)Apparatus for heating purpose _________,_____________,___________.
(iv)Apparatus for doing chemical reactions _________,_________,_________.
b) Give the user of each chemistry apparatus you have mentioned apparatus.
a) (i)Apparatus for holding thing_________,____________,_____________.
(ii)Apparatus for taking measurements_________,____________,_________.
(iii)Apparatus for heating purpose _________,_____________,___________.
(iv)Apparatus for doing chemical reactions _________,_________,_________.
b) Give the user of each chemistry apparatus you have mentioned apparatus.
9. (a) Define the word warning signs
(b) Draw and label
the basic chemical warning signs.
10. a) Define the following
terms;
(i)Heat
(ii)Flame
b) Explain how Bunsen burner work ?
(i)Heat
(ii)Flame
b) Explain how Bunsen burner work ?
11. a) Mention the types of flame.
(i).......................
(ii)......................
b) Give the purposes of each types of a flame above.
c) Give the difference between the types of flame above.
(i).......................
(ii)......................
b) Give the purposes of each types of a flame above.
c) Give the difference between the types of flame above.
12. Mention the uses of different types
of flame.
13. Draw and label ;
(i) A Bunsen burner
(ii) A non luminous
(iii) A luminous
(i) A Bunsen burner
(ii) A non luminous
(iii) A luminous
14. Define the following
terms
(i) scientific procedure
(ii) hypothesis
(iii)experiment
(iv) conclusion
(v) observation
(i) scientific procedure
(ii) hypothesis
(iii)experiment
(iv) conclusion
(v) observation
15. (a) Give the importance of
scientific procedures.
(b) What are the applications of scientific procedures.
(b) What are the applications of scientific procedures.
16. (a) Explain the meaning of matter.
(b) Describe each of the three state of matter.
(c) Explain importance of changing one state of matter to another.
(b) Describe each of the three state of matter.
(c) Explain importance of changing one state of matter to another.
17. Define a) (i)
chemical change.
(ii) physical change.
b) Give the characteristics of each of the above.
c) Give the differences between physical change and chemical change.
(ii) physical change.
b) Give the characteristics of each of the above.
c) Give the differences between physical change and chemical change.
18. Define a)
(i) Metal.
(ii) Non metals.
b) Different between metal and non metal.
(ii) Non metals.
b) Different between metal and non metal.
19. Define the following a) (i) compound
(ii) mixture
b) Give the differences between compound and mixtures.
(ii) mixture
b) Give the differences between compound and mixtures.
20. Define the
following
a) (i) solutions.
(ii)suspensions.
(iii) emulsion.
b) Mention three classes of mixture.
a) (i) solutions.
(ii)suspensions.
(iii) emulsion.
b) Mention three classes of mixture.
21. Define the following
(i) Sublimation .
(ii) Decantation.
(iii) Filtration.
(iv) Distillation.
(v) Layer separation.
(i) Sublimation .
(ii) Decantation.
(iii) Filtration.
(iv) Distillation.
(v) Layer separation.
22. Define the following
a) (i) Rusting
(ii) Rust
(iii) Air
(iv) Combustion
(v) Fire
(vi) Fire fighting
b) Mention the components of air and their percentage
a) (i) Rusting
(ii) Rust
(iii) Air
(iv) Combustion
(v) Fire
(vi) Fire fighting
b) Mention the components of air and their percentage
23. (a) Mention classes of
fire , their burning materials and appropriate fire extinguisher.
(b) What are the components needed to start fire .
(c) What are the conditions necessary for ion to rust.
(b) What are the components needed to start fire .
(c) What are the conditions necessary for ion to rust.
24. (a) Classify the types
of extinguisher according to the chemical they contain.
(b) Explain with equation how rusting occur .
(c) Mention the methods of preventing rusting.
(b) Explain with equation how rusting occur .
(c) Mention the methods of preventing rusting.
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