CHEMISTRY FORM ONE RANDOM ASSESSMENT TEST

INSTRUCTIONS:

Answer ALL the questions.

QUESTIONS:

  1. Define the following terms 🙁 4mks)
  2. a) Chemistry

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  1. b) Mixture

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  1. c) Drug

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  1. d) Conductors and non-conductors

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  1. Give the functions of the following parts of the Bunsen burner 🙁 3mks)
  2. a) Collar

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  1. b) Jet

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  1. c) Air hole

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  1. Apart from Bunsen burner name other three apparatus used as sources of heat (3mks)

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  1. State three safety laboratory rules (3mks)

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  1. Give three differences between luminous and non-luminous flame (3mks)

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  1. Define the following terms 🙁 3mks)
  2. a) Prescription

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  1. b) Drug abuse

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  1. c) Laboratory

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  1. Give three importance of studying Chemistry in the society. (3mks)

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  1. Give the functions of the following apparatus as used in the laboratory 🙁 3mks)
  2. a) Desiccator

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  1. b) Crucible

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  1. c) Deflagrating spoon

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  1. Give the method of separating iron fillings from maize grains. (1mk)

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  1. Define a solution. (1mk)

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  1. a

) Define crystallization. (1mk)

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  1. b) Give three applications of crystallization. (3mks)

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  1. Give two reasons why mixtures should be separated. (2mks)

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  1. Explain why evaporation is not done direct but over water bath. (2mks)

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  1. a) Define sublimation. (1mk)

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  1. b) Name three substances that undergo sublimation. (3mks)

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  1. Give applications of distillation. (3mks)

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