1. which will be more reactive metal with an acid hci? [Fe or Cu]
2. in grade 7, when you placed a nail in a container of acetic acid, it corrodes. this happened because a nail is made of ______ element [Fe or S]
3. among the given elements, which will be the best material for electrical wirings? [Cu, AI or P]
4. which of the following elements would attract to magnet? [Sn, S, I]
5. which of the following elements would be so dull even when polished? [Au, Zn, or C]
2. in grade 7, when you placed a nail in a container of acetic acid, it corrodes. this happened because a nail is made of ______ element [Fe or S]
3. among the given elements, which will be the best material for electrical wirings? [Cu, AI or P]
4. which of the following elements would attract to magnet? [Sn, S, I]
5. which of the following elements would be so dull even when polished? [Au, Zn, or C]
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Answer:
1 The Relative Activity of Metals
METAL WATER HCl
sodium Highly reactive in water. Highly reactive in acid.
magnesium No reaction in water at room temperature. Reacts rapidly in acid.
aluminum No reaction in water at room temperature. No reaction.
iron No reaction in water. No reaction.