yes it does
maybe..
maybe..
When matter undergoes a physical change, its state or appearance may change, but its chemical composition remains the same. For example, when water is heated and turns into steam, its physical state changes from liquid to gas, but it is still composed of H2O molecules.
When matter undergoes a physical change, its state may change (solid to liquid, liquid to gas, etc.), its shape or size may change, or its physical properties such as density or volume may be altered. However, the chemical composition of the substance remains the same before and after the physical change.
When matter undergoes a physical change, its physical properties change. Physical properties include density, color, solubility, conductivity, hardness, kinetic and potential energy of molecules, volume, pressure, temperature etc. One or more of physical properties change when matter undergoes a physical change. Remember chemical properties i.e. chemical composition and it's reaction with other substances remain the same. Also it's mass remains the same. When ice changes to water it's volume decreases, density increases, potential energy of molecules increases. Iodine is grey when solid but gives violet vapours on sublimation. Changing the pressure or volume or temperature of a gas results in change of one or both of the other quantities. These are examples of physical change.
The chemical composition of a substance does not change when it undergoes a physical change.
It is a physical change because its still milk that hasn't changed state.
The chemical properties of a substance change during a chemical reaction, meaning the substance undergoes a chemical change and forms new substances with different properties. The physical properties may also change, such as color, texture, or state of matter.
The density of water is changed.
phase change
phisiological change,its not a physical or chemical change