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Science Class Essay Examples

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Rate of Diffusion

The lighter gases diffuse through the small openings of the porous walls more rapidly than the heavier ones (Robinson, 1992). In accordance to this, an experiment was performed to see the relationship between the molecular weight and rate of diffusion of a substance. The glass tube set–up was done by plugging in two cotton balls which are uniform in size at the opposite ends of a glass tube....

Investigating The Rate Of Reaction Between Marble Chips And Hydrochloric Acid

The other way I would improve it would be to use a burette instead of a measuring cylinder as this way I can get precise measurements. If I used too much acid the reaction would be faster causing anomalies and making my results less reliable. If I used a burette however, I would have precise measurements increasing the reliability of my results. I have a good range of results and think that I coul...

Yeast Lab Report

Looking back at the hypothesis and comparing them to the trends in the data, I can see that it supports it as the simplest sugars, Glucose and Fructose reacted the highest. Therefore my hypothesis is accepted. Aspects of the experiment that went well is that health and safety precautions were in place, the volume of concentration for substances were measured very precisely and carefully and also t...

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Conservation of Momentum Practical Write Up

CONCLUSION: The aim of the experiment was to investigate if momentum was conserved within an isolated system. By analysing the trajectory of the puck both before and after the collision and drawing vector diagrams it is evident that in all three cases momentum is conserved despite any interactions that occur within the isolated system. Through this the hypothesis was proved to be correct. Althoug...

A cylindrical billet

For each of the shape generation methods in question 1, select an appropriate material from the alternatives discussed in question 2, making sure that the process and material are compatible. 4. Which of the combinations do you feel would be the “best” solution to the problem? Why? 5. For your proposed solution, would any additional heat treatment or surface treatment be required? If so, what ...

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