Molecules in all states of matter have a Kinetic Energy that is proportional to temperature.
As water is cooled, that Kinetic Energy, the translation, rotational and vibrational, decreases.
When water reaches 0 degrees C at normal pressure, the Kinetic Energy remains constant as freezing proceeds.
Removing more heat energy decreases the potential energy of the molecules by changing their positions relative to one another. Attractive forces between molecules move them into preferred positions which are identical for every molecule. In the process a pattern emerges and a regular array of molecules is assembles in the crystalline structure we know as ice.
Unlike most other substances, this rearrangement of water keeps the molecules further apart than the average separation in the liquid. That is why ice floats, it has a lower specific gravity (density) than liquid water.
Who ever answered this is dumb because this is wrong;D
No, they do not.
hydrogen bonds
When a substance freezes, its physical state changes from liquid to solid, but its chemical composition remains the same. For example, water freezes into ice, and both have the same molecular structure (H2O). However, the arrangement of molecules changes, affecting properties like density and rigidity. Thus, while the form changes, the underlying chemical identity does not.
When a molecule freezes, the kinetic energy of that molecule decreases, and the molecules do not move as fast. It is chemically unaltered, but on the phase has changed, making it a physical change.
Yes, when water freezes, its molecules arrange into a crystalline structure that takes up more space than when they are in liquid form. This expansion is why ice floats in water.
No, they do not.
hydrogen bonds
can you keep water from expanding when it freezes?
When a molecule freezes, the kinetic energy of that molecule decreases, and the molecules do not move as fast. It is chemically unaltered, but on the phase has changed, making it a physical change.
When water melts, the molecules go from a more ordered, structured arrangement in the solid state to a less organized, more fluid arrangement in the liquid state. During freezing, the molecules transition back to a more structured arrangement as they form a solid state.
Decreases
No, ice does not undergo a chemical change when it freezes. Freezing is a physical change that causes water molecules to slow down and come closer together, forming a solid structure with the same chemical composition as liquid water.
The freezing temperature of water is 0 degrees Celsius or 32 degrees Fahrenheit. At this temperature, water molecules slow down and form a crystalline structure, transitioning from a liquid to a solid state.
When a solid freezes, it contracts making the molecules inside get closer together which makes the volume smaller.
Ice is a material with crystalline structure.
Yes, when a substance freezes, its thermal energy decreases since the molecules lose kinetic energy and slow down as they transition from a liquid to a solid state.
Below 0 degrees Celsius, water freezes and turns into ice. The molecules slow down and form a solid structure, expanding in the process.