Science Essays

Introduction Many squirrels hibernate every year, many birds migrate south for the winter, and crickets start their mating calls each day before sunset. Many plant activities, like transpiration and synthesis of certain enzymes, happen within the course of a day. But what drives these cycles of behavior is the organisms’ …

After gathering all of my data together, I divided them in 2 different sections. One table had the temperature values of two different types of peas during morning hours and the second table had the temperature values of the two different type of peas during evening hours. This way it …

The focus of this study was to investigate how the participation of different sports activities affects the reaction time. Two hypotheses were established based on my research question: “People who carry out sports should have a faster reaction time than those who do not” and “The sport where a fast …

The ethnography “Magical Writing In Salasaca: Literacy and Power in Highland Ecuador” was far more intriguing then I had expected. I enjoyed the way the book was organized and felt that it was very easy to follow because Peter Wogan broke his book into different categories and subjects. He breaks …

A sample of solid magnesium ribbon, measuring approximately 2.5cm and weighing 0.037 g +/- 3% was allowed to react with an aqueous solution of hydrochloric acid, with a concentration of 6 mol dm-3 in a 1000cm3 graduated cylinder. The sample of magnesium was wrapped in a cage constructed of copper …

Experimental Design Focus Question What is the empirical formula for magnesium oxide? Hypothesis The combustion of magnesium will generate data which can be used to calculate the empirical formula of magnesium oxide. Theory The following combination reaction was used in this experiment: Magnesium + Oxygen � Magnesium Oxide The Law …

Aim: The purpose of this experiment is to detect the metal oxidation that will lead to rust by using a ferroxyl indicator solution in the presence of Fe2+ ions. Hypothesis: The reaction would most probably occur in an acidic solution and it would be more pronounced on the nails where …

Is it possible to use baking soda, NaHCO3(s), and 2.00 mol dm-3 HCl(aq) to generate a gas that will fill a zip-lock bag and act as an air bag? Objectives: 1. To determine if baking soda and hydrochloric acid can create a suitable air bag 2. To determine the volume …

For our coursework investigation we tested how concentration affected the rate of reaction between calcium carbonate and hydrochloric acid. We experimented with the reaction: Calcium Carbonate + Hydrochloric Acid Calcium Chloride + Water + Carbon Dioxide CaCO3 + 2HCl CaCl2 + H2O + CO2 The rate of reaction is a …

Introduction: What is the reactivity of metal? The reactivity of metal was the rate of metal which it would be reacting with each others. The higher the reactivity was, they could have replaced the more other kind of metal in the metal solutions. The metal who has the highest reactivity …