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O Level Physics Tuition Singapore/Tuition O Level Physics/Tutor
Please post your O Level Physics questions here
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Natasha Tai Qian Hui
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Please help me fill in the following:
choices are:
beaker, conical flask, test tube, flat-bottomed flask, crucible, boiling tube, pipette, evaporating dish, filter funnel, measuring cylinder, bell jar, wire gauze, gas jar, water trough, retort stand, round-bottomed flask, tripod and cuvette
1) To store and to transfer chemicals (not meant for measuring accurate volume of liquid
2) to contain or heat a small amount of solid substances
3) to contain or heat a small amount of solid and liquid substances
4) to heat solids directly over a flame
5) to evaporate liquids (my answer: evaporating dish)
6)to help transfer chemicals into apparatus with small opening. To separate a solid from a liquid with the help of a filter paper. (My answer: filter funnel)
7) To measure a specific volume of liquid
 To measure very accurately a specific volume of liquid (eg. 25.0 cm3, 50.0 cm3)
9) to collect gases (my answer: gas jar)
10) to isolate an experiment set up from the outside experiment (my answer: bell jar)
11) To support apparatus during heating (my answer: retort stand)
12) to support a container (such as beaker or flask) during heating. When the Bunsen Burner flame is beneath it, the wire gauze helps to spread the flame (and heat) out evenly over the container.
13) To hold/support apparatus during experiment
14) For mixing and swirling chemiclas. To store chemicals (my answer: conical flask)
15) For heating liquids and to prepare gases when heating is required (my answer: round-bottomed flask).
16) To store liquids and to prepare gases when heating is not required
17) To contain water (eg. while collecting gases by displacement of water)
18) to hold samples for spectroscopic experiments
I can only answer some but mostly I am not sure. Pls help. I need to submit this assignment by tomorrow.
Thanks, Natasha
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O level Physics Tuition Singapopre/Physics Tuiton/Physics Tutor
1 beaker, 2 test tube, 3 boiling tube ,4 crucible, 5 evaporating dish, 6 filter funnel,7 measuring cylinder , 8 pipette – specific volume 25.0 ,9 gas jar, 10 bell jar, 11 wire gauge,12 tripod ,13 retort stand,14 conical flask,15 round-bottomed flask , 16 flat-bottomed flask, 17 water trough, 18 cuvette
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O-Level Singapore/O-Level Physics Tuition/Physics Tutor
Common Mistakes in O-level Physics
•Wrong substitutions
•Answers without appropriate working
•Missing units
•Significant figures
•Vague answers
•Irrelevant answers
To excel in O-level Physics, you have to avoid common mistakes make in O-level Physics. Our O-level Physics tutors are able to guide you along to ace in Physics.
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O-Level Singapore/O-Level/Pure Physics Tuition/Physics Tutor
Measurements – Key Concepts
1) Metre rule range is several centimetres to one metre, precision 1 mm
2) Tape measure range is several metres, precision 1 mm
3) Vernier capilers range between 1 cm to 10 cm, precision 0.1 mm
4) Micrometer screw gauge < 1 cm, precision 0.01mm
Pure Physics Tutor
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O-Level Singapore/O-Level/Pure Physics Tuition/Physics Tutor
Kinematics – Key Concepts
1. Speed is the distance moved per unit time
2. Velocity is the change of displacement per unit time
3. Acceleation is the change of velocity per unit time
4. The gradient of the tangent at a point on the distance-time graph gives the instantaneous speed
5. The gradient of the tangent at a point on the speed-time graph gives the instantaneous accleration.
6. The area under the speed-time graph is the total distance travelled.
7. When air resistance is negilible, all objects fall under gravity with a constant accleration 10 ms-2
8. When there is air resistance, falling object will experiences deceleration until it reaches a terminal velocity. This happens when the weight of the object is equal to the air resistance
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