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Tag: chemistry
Introduction: The reactivity of metals with water is an important topic in chemistry, as it helps us understand the behavior of metals and their potential uses in different applications. In this investigation, we will determine the order of reactivity of a series of metals with water. Materials and Methods: Materials: A series of metals (e.g., … Continue reading Reactivity Series – Reactions of Metals and Water (includes model data and conclusion)
In the conclusion and evaluation section of your IBDP Chemistry IA, you should summarize the results of your experiment and discuss the overall findings. This section should also include an analysis of any errors that may have occurred during your experiment and ways to improve the experiment in the future. Here is a guide to … Continue reading How to score full marks in the conclusion evaluation section of the IBDP science IA, specifically dealing with error analysis.
Esterification is a common organic reaction that involves the reaction of a carboxylic acid with an alcohol to form an ester and water. In this experiment, we will be carrying out an esterification reaction to test the equilibrium position at different temperatures using ethanoic acid and ethanol. Safety precautions: • Wear personal protective equipment (PPE) … Continue reading Esterification Reaction and equilibrium constant determination.
The Winkler method is a widely used analytical technique for determining the amount of dissolved oxygen in water samples. Dissolved oxygen is essential for aquatic life and is an important indicator of water quality. The Winkler method involves the addition of reagents to a water sample that react with dissolved oxygen to produce a measurable … Continue reading The Winkler Method – Biological Oxygen Demand BOD
Objective: To observe the reactivity of Group 1 metals (alkali metals) with water. Materials: Group 1 metals (sodium, potassium, lithium) Distilled water Beakers or test tubes Tongs or forceps Safety goggles Laboratory coat or apron Fire blanket and extinguisher (in case of fire) Safety Information: Group 1 metals are highly reactive with water, and can … Continue reading Demonstrating Group 1 Metals with Water
This criterion assesses the student's ability to draw valid conclusions based on the evidence obtained and to evaluate the reliability and limitations of the investigation. The assessment looks for evidence of appropriate analysis and interpretation of the data, clear conclusions, and an understanding of the limitations of the investigation. Restate the research question or hypothesis … Continue reading How to score full marks in the Conclusion and Evaluation in the IBDP Internal Assessment (IA) or Extended Essay (EE)
Practical Science 