Chemistry Design Prac Essay

Investigate hotshot chemistry cogitate factor on the deflection of the liquid liquify in the mien of a supercharged magnetic poleResearch questionHow go away the substance of time spent clash a glaze pole accept the angle of deflection of flux irrigate system in the presence of the charged scratch magnetic pole?Background ResearchStatic electricity is organise in soupcon with deuce objects, where one object gains electrons from another, resulting in one object having a substantiating charge while the other having a proscribe charge. Some materials tend to lose or gain electrons during contact with other objects. Materials with electrons bonded to it weakly, tend to lose electrons while materials with fewer electrons on the out shell tend to gain electrons. Therefore, when an object is imbalanced of a positive or negative charge, it has static electricity.Polarity is the separation of electric charges, caused when electrons be not equally shared in a molecule. Th is is caused when some atoms in the molecule have a higher electronegativity than others, causing more(prenominal) electrons to be attracted to it, leaving one side of the molecule more negative than the other. An element or molecule with an electro negativity value of 0.5+ is considered to be polar.When a polar liquid such as water is flowing in a presence of a charged rod, the liquid tend to winding towards the rod. This is because the rod depart both be positively or negatively charged, and the dipoles of the polar molecule pull up stakes be attracted to the charged rod. The charge on the rod is determined by the material which is used to rub against it, however, it does not matter whether the rod is positively or negatively charged because either way, the opposite dipoles of the polar molecule allow be attracted towards it, causing the flow of the liquid to bend towards the charged rod.Defining fissiparous and mutualist VariablesIndependentThe amount of time rubbing the glass rod with a morsel of silk. 10 seconds 20 seconds 30 seconds 40 seconds 50 seconds 60 secondsDependentThe angle of deflection of the flowing water pull up stakes be metric with power system paper with a smallest increment of 1mm. A field of operation will be drawn on the gridiron paper from the bode where the glass rod was rumps to the point where the water was deflected. A protractor with a smallest increment of 0.5 degrees will be used to calculate the angle of deflection of the water. manoeuverling Variables tabular array 1 Variables and Method of controlTypeVariableMethod of ControlControlledThe rate of the flow of waterAdjust the burette to deliver the smallest catamenia of water possible but without being discontinuous. The water will be kept flowing at the same rate, throughout the experimentation.The glass rodThe same glass rod with a diameter of 1cm will be used throughout the experiment.Pressure when rubbing the glass rod engagement the same person to rub t he glass rod against the silk, applying the same insistence every time.Placement of the glass rodA line will be marked on the grid paper so the glass rod will be placed at the exact point and the exact angle to the flowing water every time.Placement of the grid paperThe grid paper will be sticky annex to the burette and placed as close as possible to the flowing water. The same grid paper will be used and left-hand(a) at the same position throughout the experiment.Weather conditionsThe experiment will be conducted in a room with all windows closed and var. conditioning switched off to reduce effects atmospheric effects on the angle of deflection of the water.StopwatchThe one person will be using the same stopwatch every time to reduce self-opinionated errors.MaterialThe same member of silk cloth (20 cm in length, 15cm in width) will be used throughout the experimentThe experimentersThe same two people, (person with stopwatch and person controlling the glass rod) will conduct the experiment to keep random errors in measurements and readings consistent.Materials and Equipments List 50 mL buret 20cm x 15cm silk cloth 1cm diameter glass rod Distilled water two hundred mL Beaker A4 Grid paper with increments of 1mm Protractor with increments of 0.5 degrees Retort Stand clamp frame Ruler Sticky tape Stop watchMethod1. seize the clamp to the retort stand.2. Fill the burette with distilled water to approx 1cm from the top and attach it to the clamp3. Draw a straight line on the grid paper with a ruler and sticky tape it to the bottom of the burette, facing up the line on the paper exactly with the flow of the water coming out of the burette.4. Also Draw a line 90 degrees towards the line if the flowing water but stopping at 0.5 cm from the line. This line will be where the charged glass rod will be placed5. Also mark the parenthood (the tip of the burette, where the water comes out) on the grid paper6. Place the 200 mL beaker to a lower place the burette and let the water run down7. Start the horologe on the stopwatch and simultaneously, begin rubbing the glass rod against the piece of silk8. Stop the stop watch at 10 seconds and immediately place the charged rod as close as possible to the line drawn on the grid paper9. Mark the angle of deflection of the water on the grid paper10. Wait 1 delicate until the rod is completely uncharged11. Repeat steps 6 912. Repeat the experiment from steps 6 10, changing the time rubbing the glass rod against the silk cloth by 20, 30, 40, 50 and 60 seconds.13. consume the grid paper and line up all the points of the deflected water to the origin14. Measure the angles with a protractor and record the results into the table below15. Pack up the experimentTable 2 Raw data table clip charging the glass rodAngle of deflection of water trial 1Trial 2Trial 3Trial 4Trial 5Trial 6Average10 seconds20 seconds30 seconds40 seconds50 seconds60 secondsTable 3 Risks involved in the experiment and safety pre cautions to reduce the risksRiskSafety Precaution fulfill to takeThe burette is very long and is made of glass and back be broken easilyHold the burette with two give and always watch for obstacles when carrying around the research lab. Wear closed in shoes, lab coat and safety glasses in case the burette breaks. conservatively pick up the large pieces of broken glass one by one and throw in the glass bin. Use a crash to sweep all the small bits into the bin. Make sure there is no remaining broken glass in the lab.Bibliography1. Columbia University Press (1978-1979). newfangled Illustrated Columbia Encyclopaedia2. Neuss, Geoffrey (2007). Chemistry Course Companion. Oxford Oxford University Press.3. http//books.google.com.au/books?id=nkwM28diKF4C&pg=PT109&lpg=PT109&dq=deflection+charged+rod&source=bl&ots=dk2TPy7IOf&sig=g-MDZP6Q5kDsur57EIejpgJ54bg&hl=en&ei=48FrSp2bFIzusQOsy72WBQ&sa=X&oi=book_result&ct=result&resnum=24. Department of Physics and Physical Science, University of Neb rasky, Kearney Falling Water http//rip.physics.unk.edu/CyberTextBook/fallingwater/5. http//books.google.com.au/books?id=nkwM28diKF4C&pg=PT109&lpg=PT109&dq=charged+rod+deflect+water&source=bl&ots=dk2TQr4PPg&sig=iwM-1qHxsAtaF9XoGZ1Mw9UCn6g&hl=en&ei=OStsSqjFIo6qtgOT16WWBQ&sa=X&oi=book_result&ct=result&resnum=3