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Free research essays on topics related to: chemical change

8 results found, view free essays on page:

  • Test Tube Degrees Celsius
    1,267 words
    Enzyme Action: Testing Catalase Activity Enzymes are proteins that serve as catalysts and accelerate chemical reactions in living organisms. Enzymes accomplish this by lowering the energy of activation of the organism it is acting upon, however enzymes will only lower the energy of activation for specific organisms, reducing chaotic chemical reactions. The reaction is carried out in its entirety in the active site of the enzyme. The substrate (organism acted upon), binds itself into the active s...
    Free research essays on topics related to: ph levels, degrees celsius, chemical reactions, test tube, optimum temperature
  • Rate Of Reaction Bunsen Burner
    1,230 words
    Investigate A Factor Which Affects the Rate Of Fermentation Of Yeast This experiment is investigating one of the factors which affects the rate of fermentation of yeast. Several factors affect the rate of reaction: &# 61656; Increasing the concentration. (See the lock and key theory. ) If the substrate (glucose) is increased, then there would be more keys for the locks, therefore an increase in reactant concentration leads to an increase in reaction rate. &# 61656; The surface area, the bigger t...
    Free research essays on topics related to: carbon dioxide, rate of reaction, chemical reactions, degrees celsius, bunsen burner
  • Rate Of Reaction Carbon Dioxide
    1,229 words
    ... onward sources, from a textbook, encyclopedia, and preliminary work that I have done in class. I have shown my results on a bar chart and a line graph. On the line graph, I have drawn a curve of best-fit. There were no anomalous results. From my results, and my graph, I have found out that as the temperature of the enzymes (yeast in this case) is increased, the rate of reaction speeds up. However, when the temperature reached a certain point, (about 40 degrees Celsius), the enzymes became de...
    Free research essays on topics related to: chemical reactions, rate of reaction, carbon dioxide, degrees celsius, reaction rate
  • Evaporating Dish Aluminum Foil
    1,928 words
    Purpose: To conduct experiments and to determine whether they are physical or chemical changes Before we conduct these experiments there are some topics that we must discuss. As I stated in the purpose, in this lab we are going to be looking at some experiments, and we have to determine whether they are a cause of chemical or physical changes. The purpose for all the labs that we will be doing will be the same. During a chemical change a new substance is formed, it is irreversible, and it is usu...
    Free research essays on topics related to: evaporating dish, aluminum foil, test tube, physical change, chemical change
  • Air Resistance Tyres And Friction
    1,870 words
    Dragsters use a combination of large wide tyres or the rear and small narrow tyres on the front this combination is used for the following reasons: The front wheels: The front wheels are very narrow. This is so a minimum of air resistance or drag affects the dragster with lower drag better acceleration an in turn a better top speed can be achieved all leading to a better pass (race time). Now lets try to understand the concept of air resistance and drag. A basic example is placing your hand out ...
    Free research essays on topics related to: five hundred, air resistance, surface area, greatest amount, chemical change
  • Chemical Reaction Test Tube
    682 words
    Background An example of a gas would be hydrogen. A chemical property is how a substance changes its identity. An example of this would be being able to support flammability. A physical property distinguishes one type of matter from another and can be observed without changing its identity. An example of this is somethings boiling point because when you change a liquid to a gas it does not change its identity only its form. A chemical change is when something changes identity and example of this...
    Free research essays on topics related to: chemical reaction, hydrogen, chemical change, flame, test tube
  • Chemical Change Physical Change
    259 words
    Title: Chemical and Physical Changes. Purpose: To determine the differences between chemical and physical changes when they happen. Materials: Five test tubes, Bunsen burner, crucible, test tube holder, triple beam balance, ring stand, triangle, evaporation dish, wood splint, copper turnings, copper (II) nitrate, dilute nitric acid, Ba (NO 3) 2, Na 2 CrO 4, Fe Cl 3, KSCN, Ag NO 3, ammonium dichromate, safety goggles, and matches. Results: 1. Data table (see attached page) 2. Questions (1 - 3): 1...
    Free research essays on topics related to: element, ammonium, physical change, chemical change, compound
  • Evaporating Dish Aluminum Foil
    2,222 words
    Purpose: To conduct experiments and to determine whether they are physical or chemical changes Pre-Lab Notes: Before we conduct these experiments there are some topics that we must discuss. As I stated in the purpose, in this lab we are going to be looking at some experiments, and we have to determine whether they are a cause of chemical or physical changes. The purpose for all the labs that we will be doing will be the same. During a chemical change a new substance is formed, it is irreversible...
    Free research essays on topics related to: test tube, hydrochloric acid, evaporating dish, aluminum foil, chemical change

8 results found, view free essays on page:

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