PUMPA - SMART LEARNING
எங்கள் ஆசிரியர்களுடன் 1-ஆன்-1 ஆலோசனை நேரத்தைப் பெறுங்கள். டாப்பர் ஆவதற்கு நாங்கள் பயிற்சி அளிப்போம்
Book Free DemoA student took a solution of copper sulphate in a beaker and put a clean iron nail into it and left it for about an hour.
(a). What changes do you expect?
(b). Are these changes chemical in nature?
(c). Write a word equation for the chemical change, if any.
(a). What changes do you expect?
(b). Are these changes chemical in nature?
(c). Write a word equation for the chemical change, if any.
(a). The Copper sulphate solution is blue in colour. When an iron nail is left in it for some time, the colour of the copper sulphate solution changes to , and the surface of the iron nail gets a brown deposit.
(b). , the changes are chemical because the reaction forms new substances, iron sulphate (green) and (brown).
(c). Copper sulphate (blue) + Iron (Shining silver) -> Iron sulphate () + Copper ()
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