Which of the following represents a chemical change? bending a wire freezing of water fireworks exploding melting of a wax candle

There are several differences between a physical and chemical change in matter or substances. A physical change in a substance doesn't change what the substance is. In a chemical change where there is a chemical reaction, a new substance is formed and energy is either given off or absorbed. In this question, the right answer would be Fireworks Exploding, because fireworks are completely changing. bending a wire doesnt change the wire, freezing water doesnt change the properties of water, and melting doesnt change the properties either.