Question

Which process is a chemical change? breaking of glass formation of frost magnetization of an iron nail loss of atmospheric ozone

Answer 1

loss of atmospheric ozone is a chemical change.

Answer 2

Loss of atmospheric ozone is a chemical change.

• Chemical changes occur when the molecular makeup is changed and a new product is created.
• New products are created via chemical modifications.
• Chemical alterations are both permanent and irreversible.
• Energy changes occur when a chemical reaction takes place. There is a difference in energy between the creation of new bonds in products and the breaking of existing bonds in reactants.
• When energy is released from the process, it is referred to as an exothermic reaction, and when it is absorbed, it is referred to as an endothermic reaction.
• High in the atmosphere, the ozone layer which is present protects organisms from the sun's damaging ultraviolet (UV) radiation.
• Through the usage of chemicals like chlorofluorocarbons, human activity created a hole in it.

                                    O₃+hν → O₂+O

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