Question

what is physical change and chemical change? give two examples of both changes

Answer 1

physical change is a change in which sometimes a new product forms or it can be reversed sometimes and at the other hand chemical change is a change in which a new product forms
eg. physical change- melting of ice, melting of wax
eg. chemical change- reaction of burned magnesium ribbon with air

Answer 2

$\large{\sf{\red{\underline{\underline{Hello \:GM}}}}}$

Properties such as shape, size, colour and state of a substance are called it's physical properties. A change in which a substance undergoes a change a physical properties is called a physical change. A physical change is generally reversible. In a such change no new substance is formed..