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Discussion part for experiment properties of alkenesFull description
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A great list of links to the most used physics books.
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A great list of links to the most used physics books.
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PRECAUTIONARY STEPS FOR INVESTIGATIVE EXPERIMENTS
Paper 3: Question 3 and 4 [1 mark]
"No. "Type of experiment "Precautions that can be taken "
" "involving; " "
"1 "Light "Experiment must be carried out in darkened "
" " "room. "
" " "Lens, screen and object must be in line "
" " "Avoid parallax error by placing the eye such "
" " "that the line of view is perpendicular to the"
" " "scale of the ruler. "
"2 "Spring "make sure the spring is not loaded beyond the"
" " "elastic limit. (spring return to original "
" " "length when load is taken off). "
" " "Avoid parallax error by placing the eye such "
" " "that the line of view is perpendicular to the"
" " "scale of the ruler. "
"3 "Electric "All connections must be secure/tight. "
" " "Off the switch after readings are taken to "
" " "prevent wires from heating up (resistance "
" " "increase) "
" " "Avoid parallax error by placing the eye such "
" " "that the line of view is perpendicular to the"
" " "scale of the ammeter/ voltmeter. "
"4. "Heat "Liquid must be stirred constantly so that "
" " "temperature rises evenly. "
" " "Alluminium block must be wrapped with "
" " "insulating material to prevent heat lost. "
" " "Thermometer bulb should be smeared with oil "
" " "to give better thermal contact with the "
" " "block. "
" " "Avoid parallax error by placing the eye such "
" " "that the line of view is perpendicular to the"
" " "scale of the thermometer. "
"5 "Measuring "Avoid parallax error by placing the eye such "
" "instruments "that the line of view is perpendicular to the"
" "such as ammeter, "scale read. "
" "voltmeter, metre "Take into account zero error of instrument. "
" "rule ... " "
* [Student can give more than one answer for this question. No penalty for
the answer which
is unsuitable]
* unacceptable answer
Avoid parallax error. [without any further explanation]
