Name two metals that starts floating after sometimes when immersed in water explain why
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Lithium and sodium float in water because of their low densities. Lithium gradually reacts and disappears, forming a colourless solution of lithium hydroxide whereas sodium (which also forms its corresponding hydroxide) melts almost at once to form a small silvery ball that dashes around the surface
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The two metals are:
(i) Calcium (Ca)
(i) Magnesium (Mg)
They start floating because the bubbles of hydrogen gas which are formed during the reaction stick to the surface of the metal.
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