Lab Report Coefficient of Linear Expansion of a MetalIntroductionMost solid materials expand when heated and contract when cooled because they experience a change in the energy state of its molecules or atoms. According to the atomic perspective, the average vibrational amplitude of an atom increases with increasing temperature. Each material has a property called the "coefficient of linear expansion" which indicates the extent to which a material expands upon heating or contracts upon cooling. The expansion coefficient is very important for all structures and foundations of buildings to avoid the possibility of collapse. ObjectiveThe objective of this experiment is to calculate the linear expansion coefficient of a metal. The variation in length of different materials such as glass, brass, copper, stainless steel and aluminum will be determined and the corresponding linear expansion coefficient will be calculated.GROUP #5Metal(pyrex)Glass Brass Copper Steel AluminumData T1=27¢XCT2= 95¢XCL1 =0.6 m T1=27¢XCT2=98¢XCL1=0.6 m T1=27¢XCT2=98¢XCL1=0.6 m T1=27¢XCT2=98¢XCL1=0.6 m T1=27 ¢XCT2=98¢ XC) ƒ´l (0.01mm) T (¢ XC) ƒ´l (0.01 mm) T (¢ XC) 10 5 5 27 5 27 27 30 40 19 2720 9 30 30 20 27 40 49 33 2730 11 45 30 35 28 27 52 68 53 3040 1 4 59 45 58 41 38 64 80 71 5550 15 63 55 77 53 62 71 85 90 7260 15 69 68 83 66 78 73 88 1 04 8170 15 78 83 88 76 84 74 90 106 0 15 81 86 90 79 88 74 91 107 8890 16 83 87 91 79 90 74 92 107 90100 16 84 87 93 79 91 74 93 108 91110 16 86 87 93 79 92 7 4 94 108 93120 16 88 87 93 79 93 7495 93130 16 89 87 93 79 94 74 95 109 94140 16 90 87 93 79 94 74 95 109...... middle of the card ......the low metal pipe was not well insulated, some steam and water heat leaked out from both sides of the rubber lining and also through the opening for the thermometer. Data results were slightly affected due to heat loss. After running the first sample, the percentage deviation of glass, copper, stainless steel and aluminum increased significantly. One reason is that the metal tube failed to return to its original temperature or normal state in a short period of time, even though it was cooled by flowing under water. Another factor was that the thermometer also could not return to room temperature. Conclusion Fortunately the experiment ended quite close to the accepted value. However, since this is only an approximation of the data and other sources of errors, the accuracy of the data may be questionable.