Five examples of Physical and Chemical changes (chemistry project)
Introduction Everything around us undergoes certain changes. Changes can be either physical or chemical. Physical change is a type of change where the physical properties of matter change. A change of state of matter, change in colour, odour, solubility, etc. all are examples of physical change. A chemical change is a type of change where the chemical properties of matter change. It is commonly called a chemical reaction. 1) Physical Change: i) Crushing a Can: When you crush an aluminum can, it undergoes a physical change as its shape is altered without any change in its chemical composition. The aluminum remains aluminum, but its form is now flattened. ii) Stretching a Rubber Band: Stretching a rubber band causes a physical change as its length and shape are altered. However, the chemical composition of the rubber remains the same. When released, the rubber band returns to its original shape due to its elastic properties. iii)Crumpling Paper: Crum...