Aim: To investigate how different concentrations of sodium chloride affect the rate of corrosion on iron nails. Theory: Corrosion is the degradation of a metal due to chemical reactions between it and its surrounding environment (Bell, 2015). It is most commonly associated with rust, in particular the rusting of metals such as iron. Iron corrosion…
What is Caffeine? Caffeine (C8H10N4O2) is a naturally bitter and occurring drug found in nature (such as coffee beans, tea leaves, and even chocolate). It is labeled as a drug because it fits the definition of a drug; a chemical substance that affects the central nervous system, causing changes in behavior and often addiction. Caffeine is…
Mount Tambora, is an active stratovolcano famous for its eruption in 1815 which was considered one of the most explosive volcanic eruptions in Earthʼs history. A stratovolcano is a volcano characterized by its steepness and periodic explosive eruptions and quiet eruptions. It is also known as a composite volcano because it is composed of layers…
Political Subsidies and mandatory blending have created an artificially rapid growth in biofuel production, worsening some negative impacts. Existing policies have had a limited effect in achieving energy security and climate change mitigation and therefore need to be reviewed. Government incentives and support for biofuels have been largely guided by national or regional interests rather than a more global perspective. There is…
What is Happening? The Greenland ice sheet is melting. The ice sheet melting will result in less saline (less dense) water entering the North Atlantic Ocean and floating on top of it instead of sinking, causing less and less deep water currents to moderate the globe’s climate, especially Northern Europe’s. Deep water currents are mainly…
In the year 1719, the English public debt was an overwhelming problem that hindered the Parliament as well as the Crown’s ability to effectively manage England’s finances. The manner in which government taxes were collected was inefficient and they often attempted to collect taxes several years in advance in an attempt to gain control over…
Aim “To see what factors affect the decomposition of hydrogen peroxide by the enzyme catalase which is found in the liver” Introduction Enzymes are biological catalysts. They speed up the chemical reactions which go on inside living things. Without them the reactions would be so slow that life would grind to a halt. Enzymes work…