Essay Database

illustrate the periodic trends What is periodicity? Periodicity is the repeating pattern in which the elements are arranged in the periodic table, these are some of the trends shown from looking at the periodicity of the elements. Atomic radius …

of examining a half and full wave rectifier circuit by recording and comparing the results of each circuit: ·Without a smoothing capacitor ·With a smoothing capacitor To record the results on the ripple voltage by : ·Using different values…

modern technology, consisting of a stack of disk platters, each one an aluminum alloy or glass substrate coated with a magnetic material and protective layers. Read-write heads, typically located on both sides of each platter, record and retrieve data…

Sir Humphrey Davy in 1808. Humphrey is known for his research of reactions with electrical energy and chemical reactions. Magnesium is the light weight metal that doesn't change under normal conditions. Magnesium is found in the alkali earth…

naturally in a free state, although through processes of extraction it can be obtained from rare complex minerals such as pitchblende, carnotite, and uranite. Unfortunately, mining and using Uranium has become an issue that the world must tackle.…

through an aqueous copper sulphate solution that the passage of ions through this solution results in copper atoms being dissolved into the solution from the anode while positive copper ions (cations) being discharged at the cathode. Normally anions…

Lab Description: Acid-Base Titration Introduction In this lab exercise we will evaluate the effectiveness of several indicators for the determination of the point of completion of a specific acid-base neutralization reaction. We will also determine…

please excuse any large spaces. Planing my investigation Method 1.Firstly I will measure 20ml of Copper Sulphate solution (CuSO4) in a measuring cylinder, for precise accuracy, and…

must produce a piece of coursework investigating the rates of reaction, and the effect different changes have on them. The rate of reaction is the rate of loss of a reactant or the rate of formation of a product during a chemical reaction. It is measured…

is one of the greatest Russian chemists to have ever lived. One of his many accomplishments was devising a way to organize the known elements by showing that they exhibit a periodicity, or regular pattern, of properties when they are arranged…