Q. 194.3( 6 Votes )

Name two metals that start floating after some time when immersed in water and explain why they do so?

Answer :

Calcium and magnesium are two metals that start floating after some time when immersed in water.

Explanation: Calcium and Magnesium react with water to form respective hydroxides and release hydrogen gas. The reactions are given as:


Ca + 2H2O Ca(OH)2 + H2


Mg + 2H2O Mg(OH)2 + H2


The bubbles of the hydrogen gas so formed in the reaction stick to the surface of the metal surface, and thus the metals float on water.


Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Related Videos
Champ Quiz | Corrosion: Types, Pros and ConsChamp Quiz | Corrosion: Types, Pros and ConsChamp Quiz | Corrosion: Types, Pros and Cons29 mins
Foundation | MetallurgyFoundation | MetallurgyFoundation | Metallurgy42 mins
Smart Revision | Formation of CompoundsSmart Revision | Formation of CompoundsSmart Revision | Formation of Compounds47 mins
Exceptions in Physical Properties of Metals and Non-MetalsExceptions in Physical Properties of Metals and Non-MetalsExceptions in Physical Properties of Metals and Non-Metals32 mins
NCERT | Metallurgy - IINCERT | Metallurgy - IINCERT | Metallurgy - II48 mins
Quiz | Physical Properties of Metals and Non-MetalsQuiz | Physical Properties of Metals and Non-MetalsQuiz | Physical Properties of Metals and Non-Metals24 mins
Pradeep's H.O.T.S. on Metals and Non-metalsPradeep's H.O.T.S. on Metals and Non-metalsPradeep's H.O.T.S. on Metals and Non-metals36 mins
Goprep Genius Quiz | Chemical Properties of Metals and Non-metals?!Goprep Genius Quiz | Chemical Properties of Metals and Non-metals?!Goprep Genius Quiz | Chemical Properties of Metals and Non-metals?!29 mins
Dinesh | MetallurgyDinesh | MetallurgyDinesh | Metallurgy46 mins
Smart Revision | Master Metals and Non-metals in 45 MinutesSmart Revision | Master Metals and Non-metals in 45 MinutesSmart Revision | Master Metals and Non-metals in 45 Minutes39 mins
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
caricature
view all courses
RELATED QUESTIONS :
The least reactive metal among the following is:Lakhmir Singh & Manjit Kaur - Chemistry
The metals which can produce amphoteric oxides are:Lakhmir Singh & Manjit Kaur - Chemistry
Out of the following oxides, the amphoteric oxide is:Lakhmir Singh & Manjit Kaur - Chemistry