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MEASURING MATERIAL PROPERTIES

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Introduction

MEASURING MATERIAL PROPERTIES INTRODUCTION The density of a substance is defined as its mass divided by its volume. Since density is the result of the mass of a substance and how much space it occupies, it is a fundamental or characteristic property of a substance. I intend to carry out an experiment in the laboratory of finding and comparing the density of various materials. AIM 1. to measure dimensions and calculate volumes 2. to mesure mass 3. to calculate densities of common materials 4. to tabulate results and present results as a bar chart APPARATUS * materials * senior callipers * METHOD 1. first the steel cylinder was chosen as the first ,material to investigate , the dimension (height ,length , diameter and radius) were observed by using the 2. ...read more.

Middle

H= 2.2 W=3.5 L= 4.35 33.5 294 8.78 Plastic strip (cuboid) H= 0.12 W = 3.2 L= 10.05 3.86 4 1.04 Wooden ruler (cuboid) H=0.65 W= 2.5 L=50 81.25 56 0.69 Aluminium strip (cuboid) H= 0.9 W=2.5 L= 9.9 2.70 8 2.96 Brass (cuboid) H= 0.09 W= 3 L= 9.95 2.69 20 7.43 Copper (cuboid) H=0.1 W=3 L= 9.9 2.97 26 8.75 CALCULATIONS 1. STEEL CYLINDER VOLUME = 4.1 X 2.2 X ? = 62.34 DENSITY = 486 / 62.34 = 7.809 gcm 2. BRONZE VOLUME = 1.4X 1.25X 3.45 = 6.04 DENSITY = 40/6.04= 6.62 3. PLASTIC STRIP VOLUME = 2.2X 3.5 X 4.35= 33.5 DENSITY = 294/33.5 = 8.78 gcm 4. WOODEN RULER VOLUME = 0.12 X 3.2 X 10.05 = 3.86 DENSITY = 4/3.86 = 1.04 gcm 5. ...read more.

Conclusion

The plastic and wood had very low density because polymers and wood have very small molecules that are not tightly packed together making them very light weight. Overall form the graph aluminium has the lowest density making it good for being used in engineering where density is significant. On the other hand if in engineering, the aspect of density needed is to be high then brass would be very exceptional. EVALUATION In this experiment my aims were achieved and we were successful in finding the density of different materials. I found out that the heaviest material is the brass and the least was the wood the metals were overall all heavy accept for the aluminium which seemed to be light in weight. To make this experiment better I would choose some more materials and probably more plastics and then compare. ...read more.

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