Chemistry Essay Topics

Drugs and Medicine Options Report

Medicine and drugs have been used throughout history in order to improve upon the well being of the world’s population. Both are used most commonly as a way to improve health by altering the physiological state, sensory sensations, and emotions which in some cases could all be the result of the placebo effect. Nonetheless, these… View Article

The effect of concentration on rate of reaction was investigated

Analysis: 1. How does reaction rate change according to concentration? Based on our processed data, the lower the concentration the faster the reaction. This also means that the higher the concentration, the slower the reaction. 2. Why is the cotton wool plug needed? The cotton wool plug is needed to absorb the amount of carbon… View Article

Question: How the concentration of acid (HCl) can be determined by titrating it using base (NaOH)?

How the concentration of acid (HCl) can be determined by titrating it using base (NaOH)? Chemicals needed: 1- Phenolphthalein (color indicator). 2- Sodium hydroxide (NaOH) concentration of 0.5 molar. 3- Hydrochloric acid (HCl), with unknown concentration. Equipments needed: 1- Flask. 2- Pipette (uncertainty �0.05cm3). 3- Burette (uncertainty �0.05cm3). 4- PH meter. 5- Gloves, lab coat… View Article

Reactivity of Mg and Ca

Introduction The aim of this practical is to observe the difference in the reactivity between Mg and Ca when hot and cold water is added. Hypothesis We think they will react in some kind of form. Variables The independent variable was the temperature of the water and also the quantity of metal use in the… View Article

Determination of water of hydration

Observation of copper sulfate No copper sulfate Light blue After heating for about 2-3 minutes, of the powder turns lighter and then into grey-white. Water released as vapor is observed from this point. After heating for another 2-3 minutes, of the powder turns into grey-white. After heating for 10 minutes, the whole part of the… View Article

How duration affects the rate of electrolysis in a Voltaic Cell

Design and Conduct an experiment to investigate the effect of ONE FACTOR on redox reactions. Introduction:- The two main components of redox reactions are reduction and oxidation. Reduction is a gain in electrons and the decrease in oxidation number whereas oxidation is the loss of electrons and the increase in oxidation number. Voltaic cells, also… View Article

Marie Curie: Radioactivity and X rays

Marie Curie was born Marie Sklodowska on November 7th, 1867. She was born in Warsaw, Poland (“Marie Curie – Biography” par 1). Curie received her education from local schools; but her knowledge of science from her father. She obtained “Licentiateships in Physics and the Mathematical Sciences” from Sorbonne University, in Paris (“Marie Curie – Biography”… View Article

Reactivity series for common metals experiment

Aim To see if a common metal is reactive or strong enough to replace/push out/displace another common metal from its liquid compound. Hypothesis My prediction will be: the most reactive metal shown by the reactivity series will show if the metal can displace or not the metal in the compound. For example my hypothesis in… View Article

Analysis of the Nitrogen Content of Lawn Fertiliser

Research Question: What is the percentage by mass of nitrogen (from the ammonium ion NH4+) in Bunnings Green Up brand of lawn fertilizer compared to the manufacturer’s specification of 12.3%? Aim: To determine the percentage by mass of available nitrogen, present as the ammonium ion, in Bunnings Green Up brand of lawn fertiliser, then comparing… View Article

Testing antacids

Purpose: The purpose of this investigation is to test different antacids – mild base that can neutralize acid – for their effectiveness in neutralizing stomach acids, to see if all antacid tablets are equally effective, and to learn the way of comparing antacid tablets in their acid- neutralizing ability to baking soda. Hypothesis/ Prediction: The… View Article

A group II metal hydroxide

To find the identity of X(OH)2 (a group II metal hydroxide) by determining it’s solubility from a titration with 0.05 mol dm-3 HCL Theory:1. Titrations are the reaction between an acid solution with an alkali. In this reaction (called neutralization), the acid donates a proton (H+) to the alkali (base). When the two solutions are… View Article

Relating Moles to Coefficients of a Chemical Equation

Introduction: The definition of a mole is Avogadro’s number (6.02 x 1023) of particles (atoms, molecules, ions, electrons etc.). Moles are a very important part of chemistry especially in stoichiometry since it is part of many other calculation quantities and formulas including molar mass, solution calculations and gas volume calculations. The mole is also used… View Article

Thermodynamics: Enthalpy of Neutralization/ Calorimetry

Introduction The First Law of Thermodynamics states that energy can be neither created nor destroyed. This means that energy, instead of ‘disappearing’, is either transformed, transferred, dispersed, or dissipated. When energy is lost by a system, it will be acquired by the surroundings. Heat can be described as the amount of energy needed to cause… View Article

Measuring the Energy Value in Food

Aim : To measure the energy value in different types of food, which are macaroni, bread, spaghetti, rice and French fries Hypothesis : The energy levels in different food will vary, because of the different components such as carbohydrate, protein, vitamins, etc. However, for this experiment, I will use foods that contain one common ingredient,… View Article