give one way to observe the chemical change due to electric current
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The formation of gas bubbles at the two carbon electrodes shows that a chemical change has taken place in water on passing electric current through it. If electric current is passed through acidified water, then bubbles of Oxygen gas and hydrogen gas are produced at the two electrodes in immersed in it.
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Explanation:
The formation of gas bubbles at the two carbon electrodes shows that a chemical change has taken place in water on passing electric current through it. If electric current is passed through acidified water, then bubbles of Oxygen gas and hydrogen gas are produced at the two electrodes in immersed in it.
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