answersLogoWhite

0


Best Answer

The water molecules are formed of hydrogen and oxygen atoms. However, as the temperature drops the hydrogen atoms slow down and form very tight bonds, but without the presence of oxygen atoms. This creates a more open molecular network, which is why frozen water is less dense than when in liquid form.

User Avatar

Wiki User

14y ago
This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: Why do molecules in water expand when frozen?
Write your answer...
Submit
Still have questions?
magnify glass
imp
Related questions

Why is frozen water less dense?

The water molecules expand when the temp. drops.


Why does breast milk shrink when frozen and expand when thawed?

Any liquid or solid shrinks when frozen; the molecules contract. Molecules expand when thawed.


Why do cracks in a rock get bigger if water freezes in them?

Frozen water molecules are larger and expand. In liquid form H2O is smaller


Why does water expand at the equator?

Water expands at the equator because it is warm there, and warm molecules expand. Warm molecules expand and cold molecules decrease in size.


Does solid food expand or contract when frozen?

If the food has water in it then it will expand.


By what percentage does water expand when it is frozen?

poo


Does water expand or contract when frozen?

expands because hydrogen bond operates the molecules and increase the average distance between molecules


Do water expand when frozen?

yes, this is why if you put a filled to the brim cup of water in the freezer, it overflows when it is frozen....


Why does water expand when cold?

Water expands when it is cold because the water molecules found in water expand in the cold.


Does water expand when it is frozen?

Yes, due to the orientation of the molecules. In the liquid state water molecules are in disorder, but when they are solid (ice), they form a regular hexagonal patterns that naturally surround empty space. The presence of this unoccupied center accounts for the expansion.


What happens to water molecules when they are heated?

Like all molecules, a molecule of H20 is in constant motion; 'hot' molecules move faster than 'cold' molecules. If the molecules move slowly enough the substance appears stationary to us (frozen water) and if they move quickly enough they will expand to fill their container (vapor or gas water.)


Why is water less dense?

The water molecules expand when the temp. drops.