Table 1. Activity 1 Data

The object is considered to be an Aluminum metal. The density obtained is calculated using the standard formula which is the ratio of the mass over the volume of the object; and the volume is obtained using water displacement method. The nearest theoretical value to the calculated density is the Aluminum having only 2.78 % error compared to the other metal densities given.

Table 2. Activity 2 DataWeight of bone in Air (g) 60Weight of bone in water (g) 20Relative density of bone 1.5Density of bone (g/mL) 1.5Finding Osteopenia

The relative density is used for comparison to a known value which in this case is the specific gravity of water. The components for getting the relative density of the bone is the ratio of the object’s weight in air over the the weight of the object in air less its weight in water. The calculated relative density of the bone sample is considered to be under the range of Osteopenia (1.35-1.62) which signifies having a low bone mass. The low bone mass is due to the porous material of the bone. Lesser relative density, the more porous the bone is. Table 3. Activity 3 DataWeight of empty pycnometer (g) 22.37Weight of pycnometer filled with 48.10

water (g)Weight of pycnometer filled with regular soft drink (g)

48.98

Weight of pycnometer filled with diet soft drink (g)

47.78

Relative density of regular soft drink

1.03

Density of regular soft drink (g/mL)

1.03

Relative density of diet soft drink 0.988Density of diet soft drink (g/mL) 0.988

The pycnometer is a device used to measure the density of a fluid accurately. The relative density of the regular soft drink has greater density than the known density value of water in which it should not be the case. Evident in the experiment that the regular soft drink floats in water which should mean that it should have lesser density than the water. The source of error for this case is that the pycnometer filled with regular soft drink was not weighed properly or there might have been the addition of weight due to the water present outside the pycnometer. On the other hand the relative density of the diet soft drink shows lesser density than water and the regular soft drink thus it is considered to be a diet or light soft drink.

Weight of metal (g) 16.65Initial level of water (mL) 50Final level of water (mL) 56Volume of metal (mL) 6Density of metal (g/mL) 2.775Theoretical Density (g/cm3) 2.7% Error 2.78 %