3. Lower the rock into the water.
4. Observe and record observations.
5. Use balance to find mass of irregular object (rock).
6. Process all data collected.
7. Clean up work area.
Observation: It was observed that the water level (volume) rose when the rock entered the water.
Data Collected: Volume of water – 40ml
Volume of water and rock – 55.2ml
Volume of rock –(final volume of water- initial volume of water 15.2ml)
Mass of rock – 61.9g
Data Analysis: Density = Mass / Volume
= 61.9/15.2
= 4.072cm3
Comment on Analysis: The object(rock) is denser than water it’s density being 4.072cm3 where water’s is 1g/cm3.
Source of Error: 1. Some of the water could have been spilled when the rock was added.
2. Measurements could have been misread
3.
Conclusion: It was concluded that the density of the rock 4.072g/cm3 and so the rock is
denser than water. This is likely because as a solid, it’s particles are more closely packed than that in water which is a liquid, which means it’s particles are bonded less strongly and do not vibrate it fixed position but slide over each other and are not tightly packed
