Particles must collide in order to react and the frequency of collision determines the rate of the reaction therefore, the greater the frequency collisions the faster the rate of reaction. Particles must collide in a minimum energy in order to react and we call this the activation energy. On a low temperature particles don’t have very kinetic energy and move slowly this means the collisions are less frequency and have a lower energy so the reaction will be slow. On a high temperature particles have more energy and move rapidly move this means the collisions are more frequent and have more energy so this reaction will be faster. Particles that collide are more likely to have to have the activation energy and collide successfully. When the temperature…show more content… If we increase the temperature the reactants will vibrate more making it more likely for them to collide and collide harder as they have more energy, meaning that they will have the activation energy to make reaction more likely. As the temperature of the sodium thiosulfate increased, the time taken for the mixture of sodium thiosulfate and hydrochloric acid to react decreased. This is shown in our test as the results show that at the lowest temperature of 10°C, it took 40.3 second and at highest temperature of 60°C it only took 10.2 second. This observation shows that the increase in temperature allows more successful collisions per second and therefore, increases the reaction rate. The low temperature does not have as many successful collisions per second which decreases the reaction…show more content… The higher concentration is a faster reaction and we can tell this because the line is sleeper. With high concentration, we got more product at the end, because we started with more reactant molecules at the start. Effect of Surface area on a rate of reaction Particles must collide in order to react therefore if we increase the frequency of collision we increase the rate of reaction. The rate of a chemical reaction can be raised by increasing the surface area of a solid reactant. This is done by cutting the substance into small pieces, or by grinding it into a powder. If the surface area of a reactant is increased, more particles are exposed to the other reactant therefore there will be a great chance of the particles to collide. The more collusion successful the more rate of reaction. Compared to a reaction with lumps of reactant, the graph line for the same reaction but with powdered reactant Has a steeper gradient at the start and becomes horizontal sooner, showing that the reaction time is less. An explosion is a very fast reaction which releases a large volume of gaseous products. There is a danger of explosion in factories that handle powdered flammable substances. These substances include custard powder, flour and powdered
Science Assignment Introduction: When two or more molecules interact there is a reaction which causes the molecules to change. To make new molecules, the bonds between atoms are broken and created to make them. When the products change and reactant this is called Rate of reaction. Many factors contribute to rate of reaction being affected. For example, the nature of the reactants, the particle size of the reactants, the concentration of the reactants, the pressure of gaseous reactants, the temperature…
tation lab report Lab Exercise 7 The Effect of Temperature on the Rate of Carbon Dioxide Production in Saccharomyces I. Student Objectives 1. The student will use this lab exercise as the basis for writing a scientific method report. 2. The student will understand how the rates of chemical reactions are affected by temperature. 3. The student will understand the overall fermentation reaction by yeast, starting with glucose as an energy source. 4. The…
Lucas Goldoni Bio Honors Lab Report The Effect of Enzyme Concentration, pH, and Temperature on the Rate of Reactions Abstract: In the lab we submerged pieces of potatoes within different concentration of Hydrogen Peroxide solution, then changed the temperature of the enviorment, and finally changed the pH of the enviorment. The potatoes acted as the enzymes and the Hydrogen Peroxide solution acted as the substrate in our experiment. We discovered that the effects on enzymes changing these variables…
In a 1-2 page report, address the following. The first part of your report is the Results section of a scientific paper. In this section, present the results of your experiment without any interpretation. Be sure to adequately answer the following questions: How did the rate of the reaction change as you changed each of the three variables? If you vary the temperature, after a certain temperature, the enzymes will become denatured and then the rate will decrease. Each enzyme functions at…
Catalase Enzyme Activity Enzyme Catalysis Lab Teacher’s Guide Table of Contents Teacher Guide Unit Overview Lesson Plan Materials and Preparation At least 1 day in Advance: Morning of Lab: Immediately Prior: Variations and Extensions Sample/Key Hindsight Student Guide Objective Standards Introduction Laboratory Sheet Safety Precautions Lab Team Materials Shared Class Materials Procedure Student Lab Sheet Catalase Enzyme Activity Created by Cheryl Fiello, Linda Moule, Marizka Rivette, Sarah Tonks…
Lab Report 1 Purpose To develop an understanding of the metric system and use it to measure common objects. To also learn about how to report uncertainty in your measurements. Lab Observations Most flat objects do not consist of uncertainty. When we measured round objects, because of its shape, it contained uncertainty. Lab Answers 1. Using a metric ruler, determine the length of the items in Table 1.1 below: In the final column, you are to estimate your measurement precision. To do…
conclusions from gathered data and information Task Description: Prepare a report on each of the Practicals prescribed in this document Each report should cover the headings, as far as possible, shown in the Lab Report Template; Due Date: Practical reports should be submitted in the week following the practical and must be maintained in a folder to be submitted on Monday 29th June 2014, week 9 of Term 2. Lab Report Template Title: a brief, concise, yet descriptive title Aim: What question(s)…
Student Guide and Lab Report Combined Laboratory: Gas Laws How do quantities of gases change with changing amounts, pressures, temperatures, and volumes? Balloons are containers of gas that you will use to explore such questions. Specifically, you will look at how the volume of a gas changes with temperature. The Student Guide is the Lab Procedure to follow Lab Report is found on this document – after the Student Guide. Fill out the Lab Report and submit the whole document to the dropbox to submit…
Heather Sutcliffe Digestive Physiology Lab Report Bio 132-Spring 2015 Pre-Lab (see attached copies of worksheets.) Questions from pages 29-39 What is an enzyme? An enzyme is a catalyst that works by speeding up the process of digestion. It is a substance produced by a living organism that acts as a catalyst to bring about a specific biochemical reaction. How does an increase in temperature affect kinetic energy and enzyme activity? 1. An increase in temperature will lead to more energetic…
column migration rates (Rf) of different compounds. iii. To determinethe relative polarity and colours of chlorophylls versus carotenoids. Introduction Organic chemists use a variety of techniques to prepare, isolate and analyze organic compounds. Synthetic chemists make new molecular compounds by performing reactions, for example inter-converting functional groups and making new arrangements of carbon chains and rings. Unlike the many elegant enzyme-catalyzed biological reactions that produce…
