This section considers some of the chemistry behind the colour of dyes and how the target material, for example a fibre, influences the method of dyeing and the dye used. A dye in solution is coloured because of the selective absorption of certain wavelengths of light by specific bonds in the molecule.
Cannot travel in vaccum. Sound is energy and it causes vibration, which travels in a medium. So imagine molecules transfering the energy (vibration) from source toward a particular direction. In water molecules are more rigid than in gas. So vibration is transferred faster.
When water absorbs heat, it makes the individual water molecules vibrate faster. This is because heat is essentially evenly spread energy. If the molecules vibrate fast enough â¦ , they will be able to separate from each other and become a gas, which is what happens if the water evaporates and boils.hat happens to water molecules when water is heated? Like other molecules, water molecules, H2O (or H-O-H), move, vibrate and rotate in many ways at a temperature above absolute 0.