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SS2: ENGLISH - 3RD TERM

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  1. SS2: English Language 3rd Term – Week 1
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  2. SS2: English Language 3rd Term – Week 2
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  9. SS2: English Language 3rd Term – Week 9
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Another type of writing you must be familiar with is writing technical reports. A technical report is written on any technical or scientific issue such as a laboratory or research report – a report of an experiment carried out by a student.

Format of a Technical Report

A technical report has the following features:

1.    Introduction

2.    Date of experiment/research

3.    Purpose

4.    Outcome/result

5.    Conclusion

Guidelines on Reporting a Scientific Experiment

(a)    Report things as observed, not as you guessed (thought)

(b)    Give your full names, telephone number and address, either at the introductory paragraph or at the end of the report, so that you can easily be reached, if need be.

(c)    Mention a few other witnesses who could be contacted.

(d)    In the concluding paragraph, indicate your willingness to be of further help if need be.

(e)    Use the past tense of verbs.

(Source: New Oxford Secondary English Course for SSS 2)

Class Activity

The following is a report on an experiment in Chemistry. Study it carefully.

A Report of an Experiment Carried out in Chemistry Laboratory

Aim: To determine the purity of Benzoic Acid Crystals

Experiment: Determination of melting point of Benzoic Acid Crystals.

Theory: A pure solid substance when heated, melts to form a liquid, and the temperature at which a solid is in equilibrium with the liquid is called the melting point. If a solid is pure, it melts suddenly i.e. has a sharp melting point, but if it is impure, its melting point will spread over a certain range of temperature. This is the criterion for the purity of a solid. Also the melting point of an impure solid will be lower than expected because impurity lowers the melting point of pure solid.

Apparatuses: Capillary tube, 100cm3 beaker, thermometer, stirrer, liquid paraffin (oil), bunsen burner, rubber band, watch glass/filter paper, spatula, tripod stand, and wire gauze, retort stand with clamp.

Procedure:

  • Seal up one end of a capillary tube by holding it over a bunsen burner flame.
  • Place some Benzoic Acid crystals on watch glass or filter paper, and crush the crystals to fine powdered particles with a spatula.
  • Dip the open end of the capillary tube into the powdered sample and force the particles down the bottom of the tube by tapping it on the table surface/top. Repeat the process until enough solid particles (0.5cm3 length) have entered the tube.
  • With the rubber band, tie the capillary tube to a thermometer. Such that the solid in the tube is directly opposite the thermometer bulb.
  • Place the beaker half-filled with paraffin oil on a tripod stand with wire gauze. Then clamp the thermometer vertically on a retort stand making sure the bulb is well inside the liquid oil.
  • Place a lighted bunsen burner under the wire gauze and heat slowly with constant stirring of the oil.
  • Note the temperature at which the ample suddenly melts, that is the melting point if the value agrees with the scientific accepted constant for Benzoic Acid, then the substance is pure.

Individual Activity

Write a report on any experiment you have performed in any of your science classes

References

1.  Oral English Without Tears by I. Udoka

2.  New Oxford Secondary English Course for SS 2 by Ayo Banjo et al

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