Recent content by Marie Cailey

  1. Marie Cailey

    Could I use this as a factor that affects muscle fatigue

    Could I use "The intensity of muscle contractions" as a factory that may affect how quickly muscles become fatigued? I'm doing an experiment, but is this a legitimate idea? Would my hypothesis be "The intensity of muscle contractions in the body affects how quickly muscles become fatigued"?
  2. Marie Cailey

    Experiment for testing type of catalyst on reaction rate?

    Also, do I need to include about the concentration of hydrogen peroxide? I can't just put hydrogen peroxide right?
  3. Marie Cailey

    Experiment for testing type of catalyst on reaction rate?

    Independent variable - Type of catalyst Dependent variable - Oxygen produced Control Variable - Temperature at which the reaction occurs Mass of the catalyst Surface area of the catalyst anythin else?
  4. Marie Cailey

    Experiment for testing type of catalyst on reaction rate?

    So i SHOULD state on equipment "A selection of catalysts e.g. ...then the ones i just mentioned"? This is my equipment so far Gas syringe Rubber bung Delivery tube 3 x Different catalysts E.g. ...the 3 catalysts Hydrogen Peroxide Measuring Cylinder Conical flask stopwatch Goggles Clamp stand...
  5. Marie Cailey

    Experiment for testing type of catalyst on reaction rate?

    Also, what would the independent variables and dependent variables be in this investigation?
  6. Marie Cailey

    Experiment for testing type of catalyst on reaction rate?

    Thank you ALso are they the correct equipment? I'm not sure if I should say the volume of the containers e.g. the measuring cylinder or conical flask?
  7. Marie Cailey

    Experiment for testing type of catalyst on reaction rate?

    So I should list my three catalysts that I want to use? Is it manganese oxide or manganese dioxide I keep reading that they are the same but clearly not. Which should I use in an investigation? Manganese oxide?
  8. Marie Cailey

    Experiment for testing type of catalyst on reaction rate?

    Another query too: Should I say, for the equipment, "A selection of catalysts" or just three catalysts that I want to use(Manganese Oxide, zinc oxide, copper oxide) - wouldn't this make it more reproducible?
  9. Marie Cailey

    Experiment for testing type of catalyst on reaction rate?

    Hmm. Well in the case of my objective I don't think it is necessary for me to do one as instructed. Thanks, though; I'll remember for the future. I am using these equipment, but I would like some things queried. Rubber bung Delivery Tube Gas Syringe (do I need to state it's volume?) Conical...
  10. Marie Cailey

    Experiment for testing type of catalyst on reaction rate?

    What do you mean by Negative Control? Also, what do you mean by a preliminary experiment. One before hand? But what's the purpose for that. And what catalysts would you test for it?
  11. Marie Cailey

    Experiment for testing type of catalyst on reaction rate?

    I'm not doing the experiment without a catalyst, though. I am just testing three catalysts to find the rate of reaction and which works the best. But So you mean basically measure how long it takes to get to 10ml or even less and then comparing?
  12. Marie Cailey

    Experiment for testing type of catalyst on reaction rate?

    I was thinking maybe instead of measuring every 5 seconds, I could time how long it takes for 25ml of gas to be produced. Would this be a good idea? Because I could then work out the reaction rate by diving the 25 by the time taken in seconds using a stopwatch. Do you have any better idea that...
  13. Marie Cailey

    Experiment for testing type of catalyst on reaction rate?

    Thank you. I am going to use the rate at which Oxygen is produced using a gas syringe. Shall I measure the product of Oxygen every 5 seconds or not because there will be three different types of catalysts I'm going to use? Also I need a hypothesis. Will this just be "The rate of reaction is...
  14. Marie Cailey

    Experiment for testing type of catalyst on reaction rate?

    < Mentor Note -- thread moved to HH from the technical forums, so no HH Template is shown >[/color] experiment for testing type of catalyst on reaction rate? I need an experiment (just the method) Where I can test the reaction rate of changing the catalyst type I need about 3 differnet...
  15. Marie Cailey

    What Makes Physics So Fascinating? Exploring the Intriguing World of Physics

    I like phyics. I like physics like so BAD I FREAKIN LOVE IT !
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