Why is deuterium oxide called “heavy water”?(1 point)
Responses
It has extra oxygen atoms.
It has extra oxygen atoms.
Its hydrogen atoms are heavier than others.
Its hydrogen atoms are heavier than others.
Its oxygen atoms are heavier than others.
Its oxygen atoms are heavier than others.
It has extra hydrogen atoms.
Its hydrogen atoms are heavier than others.
Why is it hard to find the age of Earth?(1 point)
Responses
Earth's surface is constantly changing.
Earth's surface is constantly changing.
There is no way to find the age of rocks.
There is no way to find the age of rocks.
There are too many layers of Earth.
There are too many layers of Earth.
The Earth is constantly moving.
Earth's surface is constantly changing.
The correct answer is: Its hydrogen atoms are heavier than others.
The correct answer is: Its hydrogen atoms are heavier than others.
Deuterium oxide, also known as heavy water, is called so because it contains a heavier isotope of hydrogen called deuterium. Typically, hydrogen has just one proton in its nucleus, but deuterium has a neutron as well, making it twice as heavy as a regular hydrogen atom. This extra neutron adds more mass to the atom, hence giving it the name "heavy water." It is important to note that heavy water is chemically similar to regular water, but its heavier isotopic composition makes it distinct.