compose an activity to arrange ca,mg and fe metals in decreasing order of reactivity with water.write the suitable balance chemical equations.
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Compose an activity to arrange Ca, Mg and Fe metals in the decreasing order of reactivity with water. Write suitable balanced chemical equation and draw diagrams.
CBSE Class X Science LA (5 Marks)
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step 1:- Take metals calcium (Ca), Magnesium (Mg) and iron (Fe).
step 2:- place separately small pieces of those metals in beakers with small amount of water in them.
step 3:- if the metal react with cold water, then reaction will be vigorous.
if the metal doesn't react with cold water, then treat it with hot water.
step 4:- Record the observations and arrange the metals in decreasing order of reactivity.
we observe :
Ca + 2H2O(cold water) => Ca(OH)2 + H2
Mg + 2H2O (hot water) => Mg(OH)2 + H2
3Fe + 4H2O( steam) => Fe3O4 + 4H2
hence, reactivity order Ca > Mg > F