Ib biology lab_report_sample

 

ib lab report example

But before you either start whining or yawning, let me appease you by saying that this article will surely help you in one activity and subject—writing a chemistry report. If, by any chance, that is really the subject that you’re struggling in, feel free to check out our . You need to check out a well-written Biology lab report example so that you may be in a position to get more knowledge about how to write a successful assignment and get high grades. To become a competent writer, you can follow these tips on how to write Biology lab report. IB Chemistry: Lab Report Format. Writing good lab reports is very important in IB as they make out a big part of your final grades in the science subjects. The key to writing a good lab report is to find out what is asked for and include all those parts in your report. Here are some steps to follow: Introduction.


Sample Chemistry Lab Report - 8+ Examples in Word, PDF, Google Docs, Apple Pages


Effect of Temperature on Solubility of Potassium Chloride in Water Research question How does temperature affect the solubility of ib lab report example chloride in water? Hypothesis As the temperature of water increases, the particles of solid Potassium chloride, KCl, which are absorbing energy from its surrounding, start moving more easily between the solution and its solid state because. According to the second law of thermodynamics, the particles will shift to the more disordered, more highly dispersed solution state.

I predict that as the temperature of a KCl and water mixture increases, then the solubility of the KCl will also increase. Variables Dependant variable The dependant variable will be the solubility of Potassium chloride in water that will be calculated at different temperatures. The solubility will change as temperature increases. Independent variable The control variables need to be constant in order to get valid and accurate results.

The temperature of the solutions. Controlled variables The volume of distilled water used to dissolve Potassium chloride in each beaker The amount of Potassium chloride deposited into each beaker. The volume of the solution extracted by the syringe. Weight of each 50ml beaker. Materials 6 Syringes 1 Heating plate 6 distinctly labeled 50ml Beakers 1 Electric Balance 6 Stirring Rods Distilled Water 6 distinctly labeled ml Ib lab report example Controlling the variables The mass of Potassium chloride and the volume of distilled water introduced ib lab report example each beaker should be recorded in order to allow the experimenter to determine the molar concentration of Potassium chloride in water.

Since the same ib lab report example of water and Potassium chloride are used in each beaker throughout the whole experiment, these variables are the least likely to be the sources of errors. All 6 solutions will ib lab report example supersaturated in Potassium chloride. If the solutions were not supersaturated, an increase in solubility will not be detectable. In order for all the solutions be subjected to the same experimental conditions, the same amount of time dedicated for stirring should be the same in all 6 ml beakers.

The use of different syringes for the extraction of the Potassium chloride and distilled water solution from each beaker avoids the possibility of contamination in the case where the same syringe was used in all 6 beakers. The needle of the syringe should be placed at the midpoint between the surface of the solution and the bottom of the beaker upon extraction. This is because of it were placed at the surface of the solution some air particles might enter the syringe, and if it were placed at the bottom of the beaker some undissolved particles might be extracted, thereby leading to an increase in the actual concentration of the dissolved salt.

The weight of each 50ml beaker used for weighing the mass of dissolved Potassium chloride after the evaporation of water should be recorded. If the experimenter were to weigh the mass of one beaker and take it as a default mass, ib lab report example, the latter may be a source of error. In order to minimize errors and to "place" the solutions in the same environment, the same volume should be extracted from each solution using the syringes.

After heating the extracted solution in the ib lab report example beaker for weighing purposes, some of the water might condense back into the liquid state in the form dropletsthereby leading to an increase in the calculated weight of Potassium chloride. Therefore after evaporation has occurred and while the 50ml beaker is still hot, ib lab report example, the beaker should be immediately weighed. Weigh each of the 50ml beakers labeled 1, 2, 3, 4, 5 and 6 and record their masses.

Introduce ml of distilled water into beakers 1 through 6. Dissolve 50 grams of Potassium chloride into each beaker by using a stirring rod. The stirring in all 6 beakers should last 10 minutes. Insert the syringe at the midpoint between the solution's surface and the bottom of the beaker and extract 40ml as such from each solution. Push the contents of each syringe containing samples from the solutions in beakers 1, 2, 3, 4, 5 and 6 into the 50ml beakers labeled 1, 2, 3, 4, 5 and 6 respectively.

Heat each of the 50 ml beakers until complete evaporation of the water occurs, and then immediately place each beaker on the balance and record the mass.

By subtracting from the combined mass of 1 the salt residue from the evaporated extracted solution and 2 the 50 ml beaker, the mass of the corresponding 50ml beaker, the mass of the salt dissolved in the extracted solution can be obtained.

The number of moles is then divided by the volume of the extracted sample 40ml. The obtained concentration is then multiplied by a factor of 5, in order to get the concentration of the initial solution. As expected, the solubility will be directly proportional to the temperature, for as the temperature increases so will the molar concentration of KCl in distilled water.

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IB Chemistry: A genuine example of a moderated IA report

 

ib lab report example

 

Fly lab report p. 4 Fly lab report p. the lab groups together, there was a major difference in the response of flies to the sugars and to saccharin (Table 1). When all the sugars were considered together, this difference was significant (t = , df = 8, p. But before you either start whining or yawning, let me appease you by saying that this article will surely help you in one activity and subject—writing a chemistry report. If, by any chance, that is really the subject that you’re struggling in, feel free to check out our . IB Chemistry: Lab Report Format. Writing good lab reports is very important in IB as they make out a big part of your final grades in the science subjects. The key to writing a good lab report is to find out what is asked for and include all those parts in your report. Here are some steps to follow: Introduction.