Physical: slicing or cutting and painting it with a different color
Chemical: rusting
Answer:In 1752
Explanation:Benjamin franklin in 1752 to prove that lightning was electrical,he flew a kite during a thundorstorm.He tied a metal key onto the string and as he suspected it would ,electrically from the storms clouds flowed down the string ,which was wet and he received an electrical shock.
Answer: A Repeating Pattern
Answer:
Reduction half-reaction:MnO4-=Mn2+
Explanation:
Reduction half-reaction means the reaction in which oxidation number of species decreases after reaction and in this reaction oxidaion state of manganese is reduced to +2 from +7 hence the reduction half-reaction will be MnO4- = Mn2+ and it can be visualise by checking oxidation number of all the species present in the redox reaction . In this redox reaction , oxidation state of iron is increasing .
