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Lab Report Essays

Electrochemical cells Lab report

Analysis: The purpose of Part 1 of this laboratory is to construct a table listing the reduction potentials of a series of metal ions in order of ease of reduction. The series of half-cells is constructed by placing a piece of metal into a 1.0 M solution of its ions for each metal in the …

Physic Lab Report

Qualitative Data When amidosulphuric acid was diluted with distilled water, the beaker feels cold. When the phenolphthalein indicator was dropped into the solution, the solution color does not change and remains clear. When the diluted amidosulphuric acid was titrated with the sodium hydroxide solution, the color of the solution turns to pale pink and it …

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Climate Change Lab Report

I. Introduction a. In this lab, the question being investigated is, “Has climate changed over time? ” b. The hypothesis is, “If CO2 levels affect climate, then the climate has changed overtime because of the increased greenhouse effect caused by higher levels of CO2 emissions. ” c. Variables: 1. Independent Variable: Amount of CO2 2. …

RC Circuits Lab Report

Experiment 5: RC Circuits Abstract The purpose of this lab is to learn and understand RC Circuits. An RC circuit is composed of at least one resistor and at least one capacitor. A capacitor is composed of two plates with either air or an insulator also known as a dielectric between the plates. We do …

Enzyme Lab Report

Abstract: An enzyme is a protein that serves as a biological catalyst (Denniston, 2007). Metabolic reactions happen with in cells. Enzymes are proteins that are used to speed up these reactions without being consumed by them (Mader, 2010). Catalase is a catalyst that digests potent hydrogen peroxide and converts it into H2O and O (Campbell …

Lab Report on Solubility

The analyses of mixture were to distinguish and identify homogeneous mixture by using the techniques of decantation and sublimation. By performing these techniques, we examined our solutions such as SiO2 (sand), NH4Cl (ammonium chloride), and NaCl (sodium chloride) and mixed H2O (water) with each solution after being heated. After examining our solutions, we made calculations …

Potato Osmosis Lab Report

Abstract: In this experiment was designed to study the effect of a concentrated solution applied to white and sweet potatoes. The solution’s impact among the potatoes were to be either hypertonic, hypotonic, or isotonic. The potatoes were first cut into fries with a fry cutter, and then weighed after being cut. The white and sweet …

IB Bio lab report on photosynthesis

The effect of different coloured lights on the rate of Photosynthesis Objective: To find out which colour of light provides the best consequences for the production of oxygen/ the rate of photosynthesis Background: In photosynthesis, there are two main parts, including light dependent and light-independent reactions. Plants use the energy from light for producing sugar, …

Daphnia Heart rate – Lab Report

Introduction: Caffeine is a stimulant which is derived from leaves, flowers and seeds of plants. The plant uses the caffeine as a way to repel insects as it is used as a natural pesticide by paralyzing and killing certain insects. It is used as a stimulant to human the central nervous system by increasing the …

Vitruvian Man Lab Report

Research Question: Do we have the ideal proportion? The length of the outspread arms is equal to the height of a man The distance from the elbow to the tip of the hand is a quarter of the height of the man The maximum width of the shoulders is a quarter of the height of …

Lab Report: The Simple Pendulum

Gain insight on how scientists come to understand natural phenomena through theoretical and experimental data by determining the Period of a Simple Pendulum. This experiment will introduce us to the processes of data collection and the procedures used for data /error analysis. Theory: A Period of motion is a physical quantity associated with any cyclical …

Conservation of Momentum Lab Report

Objectives We will study the relationship of force and the duration of the collision. In doing so we will observe the max force experienced by an accelerating cart when it impacts another cart with a spring. A stiff spring will be used. We will collect the information through two items. We will use distance and …

Lab Report: Extraction of Caffeine from Tea Bags

The purpose of this experiment was to perform a liquid-liquid extraction method to extract the caffeine from the tea bags that were provided, and then recrystallize the caffeine. The solvents used in the experiment were an aqueous sodium carbonate and dichloromethane (DCM). Anhydrous calcium chloride pellets were used to dry the solution and emulsion layer …

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