# All Science Fair Projects

## The density of Coca-Cola

### Conclusion

The hypothesis that Regular Coke and Diet Coke will sink in water is not proven.

 Item Regular Coke Diet Coke Water 335g 335g Sugar 39g - Nutra sweet - 0.1g Total weight 374g 335.1g Volume of can 335ml 335ml Density = Weight / volume 1.11 g/ml 1.00 g/ml

The density of water is 1.0 g/ml. The regular coke can has a density higher than that of water and therefore it sinks in the water. The Diet Coke has a density that is the same  as water and therefore floats in the water.

When 1kg of sugar is added to 5 liter of water, the water's density becomes,
1.0 g/ml + 1000g/5000ml = 1.2 g/ml

After the sugar is added to the water, the density of both the cans becomes less than the sugared water. Therefore both the cans will float in the tank.

### Also consider

1. Repeat the above experiment  using turpentine or alcohol instead of water. However, be extremely careful when handling flamable liquids such as alcohol/turpentine (Adult supervision required, and the experiment should be done in a well equiped laboratory with proper safety gear/equipment).

2. Try to compare the results by using different types of soda cans.

### References

Density - http://en.wikipedia.org/wiki/Density

Which is more dense – Coke or Diet Coke - http://www.elmhurst.edu/~chm/vchembook/121Adensitycoke.html

See our all-time most popular science projects
 .adslot_21 { display:inline-block; width: 320px; height: 250px; } @media (min-width: 420px) { .adslot_21 { display: none; } } .adslot_22 { display:inline-block; width: 336px; height: 280px; } @media (min-width: 1025px) { .adslot_22 { display: none; } } @media (max-width: 419px) { .adslot_22 { display: none; } } .adslot_23 { display:inline-block; width: 200px; height: 90px; } @media (max-width: 1024px) { .adslot_23 { display: none; } }
Complexity level:
7
Project cost (\$):
20
Time required:
1 hour to prepare, 1 hour for experiment
Material availability:
Easily found. May be purchased at a supermarket.
Safety concerns:

None