What is the difference between Water and Heavy Water?

Some may think that water and heavy water are the same. Some people may even assume that heavy water is just water in higher density. Water is known to be a liquid that can make people come alive. Without water, it will be nearly impossible for living things to live.

Even human beings can only survive for about three days without any water. Heavy water is similar to water, but the main difference is that it will have a higher level of deuterium. This is similar to what hydrogen may look like, but the main difference is that it comes with an extra neuron that makes a big difference.