Exploring teaching and learning ideas, simplified
Category: Practical Science
In chemistry, balancing equations is crucial to understanding the stoichiometry of a reaction. In this experiment, you will learn how to balance the equation for the reaction between sodium thiosulphate and iodine using titration with starch indicator. By determining the stoichiometric coefficients, you can gain insight into the reactants and products involved in the chemical equation. This experiment provides a great opportunity to improve your titration skills and interpretation of results.
In the world of laboratory work, accuracy is key. A primary standard like potassium hydrogen phthalate can help ensure that measurements are precise and reliable. By preparing a standard solution of this compound and using it in volumetric analysis, researchers can obtain accurate concentration measurements that are essential for a wide range of experiments. This article discusses the process of making a standard solution of potassium hydrogenphthalate, the importance of using primary standards, and the benefits of using volumetric analysis in the lab.
Dive into the world of chemistry with this exciting experiment designed to classify unknown substances as metallic, ionic, or covalent compounds. Utilize various tests to examine properties such as appearance, boiling point, conductivity, solubility, and reaction with hydrochloric acid. By the end of this experiment, you'll have a better understanding of the properties and characteristics of different substance types, ultimately enhancing your knowledge of the chemical world around you.
In this experiment, you'll be measuring the heat of combustion of a series of five primary alcohols, from methanol to pentanol. By burning a measured mass of an alcohol in a spirit lamp and transferring the heat energy released to a calorimeter containing water, you'll be able to calculate the heat of combustion. The experiment requires safety glasses, a thermometer, a calorimeter, and the primary alcohols, which are flammable and potentially poisonous. Once completed, you'll be able to plot a graph of your results and draw conclusions from the data.
This chemistry experiment teaches you how to calculate the empirical formula of a compound by using molar ratios and mass calculations. By exploring the reaction between magnesium and oxygen, you can determine the empirical formula of the compound formed. The experiment involves heating magnesium ribbon with oxygen to produce magnesium oxide, recording the masses of the substances before and after the reaction, and calculating the molar ratios to determine the empirical formula. Learn about the procedure, requirements, and calculations involved in this experiment, and explore questions that will help you further understand the concept of empirical formulas.
The aim of the experiment is to introduce the spectra emitted by some s-block elements when their atoms are excited by heating in a Bunsen flame. The experiment requires a hand spectroscope, a Bunsen burner, flame-test wire, hydrochloric acid, and safety glasses. The procedure involves observing the difference between a continuous emission spectrum and a line spectrum by heating various elements and observing their emission spectra. The experiment also aims to identify the reason behind the production of a unique line spectrum for every element.
Practical Science 