Experiments

                         "Density"

 Introduction:The porpuse of this experiment is to determine the density of water, oil and alcohol.

   Materials:
Scales 
Oil
3 glasses
Alcohol
Water
Test tube

Steps: 

1. At first to weight the liquids
2. Then to weight
3. Next to measure 100ml of water in the glass and to determine the mass to subtract the value of glass (the repeat the step with the oil and alcohol.
4. Finally to calculate the density of water, oil and alcohol

Results:

Substances   Mass    Volume   Density
Water          18.3 g     20ml       0.91 g/ml
Oil               12.2 g     20ml       0.61 g/ml
Alcohol      19.9 g      20ml       0.64 g/ml

Discussion:
We found that our hypothesis was correct as we predicted because the water is more dense.