INTRODUCTION: Bath bombs consist of a wide range of ingredients, including bath salts, food coloring, fragrance, citric acid, sodium carbonate, and other components. Bath bombs ‘fizz’ when water inclines to trigger a reaction between an acid and a base (neutralizing substance). Many bath bombs contain citric acid, and sodium carbonate, which incline to have a…
Abstract Proteins are very complex structures and have many variables that affect their function. This lab examined some of those variables. For the first part beef liver, which contains the enzyme catalase, was added to solutions of different concentrations of the substrate hydrogen peroxide. The second and third sections tested the effects of temperature and…
Background information: Photosynthesis is the process in which plants go through to produce energy in the form of glucose required to survive. It is a chemical reaction that involves the use of carbon dioxide, water, and light. This process of photosynthesis takes place in the chloroplasts that are found in the leaves of the plant.…
Introduction During a grip motion, the skeletal muscles in the arm and hand are used to generate and maintain the grip (Schoenfeld, 2012). Figure 1 shows the muscles, including the deltoids, triceps, biceps, and palmar muscles, that are involved in controlling movement and strength in the hand. Motor functions are controlled directly by the CNS…
After collecting the following data and observations, the unknown liquid, #19UL11, was determined to be 2-Butanone. 2-Butanone is a ketone with a boiling point of 80 degrees Celsius, and a molecular weight of 72.11 g/mol. This data was confirmed by the boiling point determined in lab which was 68 degrees celsius, and from the GCMS…
Research Question How does salinity affect the seed germination of Solanum lycopersicum? Introduction Relevance to Real world Covering 14% of Australia and home to over two million people, the Murray Darling Basin is Australia’s largest and most iconic river system (figure 1) (McCormick, 2015). As over one-third of Australia’s food supply is produced by the…
Introduction: Basketball is an internationally known sport and is practiced by several different groups of people around several different areas in the world; in fact, it is one of the most popular sports in the world at the moment. To ensure a proper game of basketball, you need to have a good amount of elasticity…
Research question: How will increasing the voltage (v) to 5v, 10v, 20v, 35v, and then 50v affect the amount of current (Amps) measured by an ammeter, keeping the resistance (ohms) at 12 ohms and the wire length of 10cm constant, in a series circuit to prove ohms law? Background information on Ohm’s law: Ohms law…
This is a laboratory report which examines the oxidation of Magnesium and its percent yield. It is a very common lab report assignment for high school students across North America and the UK. The report will look to understand the percent yield of Magnesium Oxide (MgO) after heating varying amounts of Magnesium via a conventional…
Introduction This study focused on an object in motion with uniform acceleration. Using the Motion Encoder System and LoggerPro, the position, velocity, and time were taken and analyzed with the goal to determine linear and quadratic acceleration. Interpreting the graphs allowed the discovery of the effect of acceleration due to Earth’s gravity. This was represented…
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…
TLC is thin layer chromatography, chromatography in which compounds are separated on a thin layer of adsorbent material, typically a coating of silica gel on a glass plate or plastic sheet. Lab coats and safety glasses must be worn as Ethanol which is flammable, Ethyl Ethanoate which is volatile, highly flammable and the vapor may…
Abstract In this experiment, 1.41M sodium chloride aqueous solution was prepared and quantitatively transferred into a 250ml volumetric flask to further diluted to 0.141M. The transfer was inspected to be complete by attempting to precipitate with silver nitrate solution. Sand was successfully separated from 600ml water by vacuum filtration. The Pasteur pipet was calibrated to…
Introduction In this lab, our purpose was to calculate the value of X in the chemical equation CuSO4 ∙ XH2O using our knowledge of percent composition. The only information we were given was that the value of X is somewhere between one and ten which indicates the number of water molecules there are that hydrate…
Introduction This report presents a paper beam designed to span a 270mm gap between two wooden columns. The beam had to be made of 3 pieces of A4 paper and could only be held together with sticky tape and glue. Experimental Sketches Experimental Procedures Rig: The rig that was used to test the strength of…
Procedure Examine the following chemicals at their various stations: NaCl Ethanol CuSO4 NH4NO3 Kerosene Sulfur CaSO4 Ca(NO3)2 Sucrose Unknown O2 K3Fe(CN)6 Record your observations in a table with the following headings: Name, Formula, Ionic or Molecular, State at RT, Solubility, Colour of Solution, Conductivity of Solution, Melting Point, Boiling Point Analysis Questions Make a…
Introduction The purpose of this lab was to use the microscope and identify cells such as animal cells and plant cells. This subject is important because in Biology, we will be using the microscope many times during different laboratory exercises. The microscope is used for looking at many specimens that cannot be seen with the…
Introduction: The rate at which an object cools (i.e. how quickly its temperature decreases) depends upon several factors, including: Surface area Volume Type of insulation Temperature difference with the surroundings For this investigation, the effect of the temperature of water upon the rate of cooling will be investigated. The temperature-drop over 5 minutes (600 seconds)…
ABSTRACT: This experiment was conducted to investigate the selective permeability of dialysis tubing. The permeability of the tubing to glucose, starch and iodine (potassium iodide) was tested. The dialysis tubing was clipped to form a bag so that glucose and starch was fed into the bag through the other end, and was also clipped to…
Purpose: Two observe two different single displacement reactions. Hypothesis: When zinc is added to copper (II) sulfate, a single displacement reaction will take place, creating a solid, copper, and zinc sulfate. When zinc is added to hydrochloric acid, hydrogen gas will be released a solid, zinc chloride, will be formed. Materials: Hydrochloric acid Zinc Copper…