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Density of Iron

In: Science

Submitted By marabapakyache
Words 1179
Pages 5
Aim – To find out the density of iron.
Method – * Take different number of iron nails. i.e. 15, 30, 45, 60, 75. * Measure and record the volume for the different number of nails, by immersing the nails into water, and recording the displacement. * Measure and record the mass of the different number of nails using a balance. * By using the formula Density = Mass/ Volume calculate the density of the iron nails. * Note this information in a lab report…
Apparatus – * Measuring Cylinder * Balance * Iron Nails * Water (5cm^3 as initial volume) * Tissue Paper
Independent Variable –Volume
Dependent Variable – Mass
Controlled Variables – Initial volume of water and iron nails.
Modifications to the experiment – I noticed while immersing 60 and 75 nails into the measuring cylinder, some nails could not fit and were above the water level. Hence to calculate the volume for these many number of nails, the initial volume was changed from 5cm^3 to 6cm^3. Then I measured the change in displacement to find the volume.

Raw data table – Number of Nails | Mass of Nails/g ±0.10 | Volume of Nails/cm^3±0.10 | | Trial 1 | Trial 2 | Trial 1 | Trial 2 | 15 | 3.90 | 4.10 | 0.50 | 0.50 | 30 | 7.90 | 8.103 | 1.00 | 1.00 | 45 | 11.70 | 12.05 | 1.70 | 1.55 | 60 | 15.75 | 15.95 | 2.95 | 2.80 | 75 | 19.80 | 19.70 | 3.55 | 3.70 |

Qualitative Observations –

* When I kept 15 nails in a measuring cylinder which had 5cm^3 of water, the water displacement was extremely little. * As the mass of the nails increased so did the volume. * The more the nails I put into the measuring cylinder, the more was the displacement of water. * The nails were not equal size or mass.

Processed Data Table – Number of Nails | Mass of Nails/g | Volume of Nails/cm^3 | | Average | Average | 15 | 4.00 | 0.50 | 30 | 7.95 | 1.00 | 45 |

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