Chemistry Essays

A firework is an incendiary device or material that can be used forsignalling orentertainment. There are chemicals located in the nose ofthe rocket that explode, producing the colours seen. The art of fireworks, first originated in ancient China, with thefirst explosive being made from a mixture of black powder during …

During my experiment, I have been investigating my research question: To what extent do white and brown eggshells differ in respect to percentage by mass of calcium carbonate content? Calcium carbonate is a substance found in the eggshells giving them hardness and strength. It is essential to the commercial egg …

Pure aluminium is a relatively soft, silvery white metal. When exposed to air, a thin coating of Aluminium oxide gives it a dull lustre. It is three times less dense than water, and has great strength when alloyed, it doesnt rust and has high electrical conductivity, and Aluminium is also …

The chemical compound potassium nitrate is a naturally occurring mineral source of nitrogen. It is a nitrate with chemical formula KNO3. Its common names include saltpetre (from Medieval Latin sal petrae: “stone salt” or possibly “Salt of Petra”), American English salt peter, Nitrate of potash and nitre. The name salt …

AIM: To outline what a precipitation reaction is, describe ways which one can predict whether a precipitation reaction would form or not, describe the uses of precipitation reactions in everyday activities and industries BACKGROUND INFORMATION: Precipitation is the formation of a solid in a solution during a chemical reaction, such …

Though Perdue Operations has a great deal of positive attributes that have helped them to achieve success in the broiler market, there lies a weak link in their chain of success. The weakness lies in the overcapacity of the poultry market. The Perdue Company has spent a great deal of …

Osmosis is the diffusion of water molecules from an area of high concentration of sucrose solution to an area of lower concentration of sucrose solution, through a selectively permeable membrane. The water molecules move down a concentration gradient in osmosis. Two diagrams of osmosis are shown in figures 1 and …

Lewis Acids and BasesLewis acids and bases play an important role in chemical reactions because, except oxidation-reduction reactions, almost every reaction could be categorized as an acid-base reaction. Bases in water solutions show certain specific characteristics: bitter taste, feel slippery, and turn litmus paper blue. Acids in water solutions show …

Experiment1 Separation of mixtures by filtration and crystallisation Background The separation of a mixture of two solids can often be achieved by filtration and crystallisation. To be successful, this requires that the components of the mixture have different solubilities in a particular solvent. AimThe purpose of this experiment is to …

1. Label 7 of the dishes with the names of the following products: Sulfur, Iron, Sodium Bicarbonate, Sodium Chloride, Sugar, Sand, and Magnesium. Place small samples of each in the appropriate dishes. 2. Examine each sample with a magnifying glass and magnet and record your observations in the data table. 3. …