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why ca and mg floats on water ?

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https://byjus.com/question-answer/why-calcium-floats-over-water-during-the-reaction-with-water

https://byjus.com/question-answer/why-calcium-floats-over-water-during-the-reaction-with-water
Why calcium floats over water during the reaction with water – BYJU’S
Ca(s) + 2H 2 O(l) → Ca(OH) 2 (aq) + H 2 (g). The reaction of calcium with water is less violent. So, the heat released is not sufficient for the hydrogen to catch fire. Calcium starts floating because the bubbles of hydrogen gas which are formed during the reaction stick to the surface of the calcium metal and hence calcium .

https://www.youtube.com/watch?v=9SP-EoFa7UE

https://www.youtube.com/watch?v=9SP-EoFa7UE
Why Mg and Ca float on surface of water – tutorial by Aliya Gupta
CBSE NCERT Class 10: Chapter- Metals and Non metals-Why Mg and Ca float on surface of water – tutorial by Aliya Gupta

https://futurestudypoint.com / why-do-calcium-and-magnesium-float-on-the-surface-of-the-water

https://futurestudypoint.com / why-do-calcium-and-magnesium-float-on-the-surface-of-the-water
Why do calcium and magnesium float on the surface of the water …
30 mai 2022It is a chemical reaction of water with both of the metals calcium and magnesium. Calcium and magnesium both are very reactive substances, the reaction of water with calcium and magnesium releases hydrogen gas, this hydrogen gas sticks all-around on the surface of the both of the metals in the form of bubbles, and the overall density of the …

https://chem.libretexts.org/Bookshelves/Inorganic_Chemistry/Supplemental_Modules_and_Websites_(Inorganic_Chemistry)/Descriptive_Chemistry/Elements_Organized_by_Block/1_s-Block_Elements/Group__2_Elements:_The_Alkaline_Earth_Metals/1Group_2:_Chemical_Reactions_of_Alkali_Earth_Metals/Reactions_of_Group_2_Elements_with_Water

https://chem.libretexts.org/Bookshelves/Inorganic_Chemistry/Supplemental_Modules_and_Websites_(Inorganic_Chemistry)/Descriptive_Chemistry/Elements_Organized_by_Block/1_s-Block_Elements/Group__2_Elements:_The_Alkaline_Earth_Metals/1Group_2:_Chemical_Reactions_of_Alkali_Earth_Metals/Reactions_of_Group_2_Elements_with_Water
Reactions of Group 2 Elements with Water – Chemistry LibreTexts
30 juin 2023Magnesium burns in steam to produce white magnesium oxide and hydrogen gas. Mg(s) +H2O(g) → MgO(s) +H2(g) (2) (2) M g ( s) + H 2 O ( g) → M g O ( s) + H 2 ( g) Very clean magnesium ribbon has a mild reaction with cold water, given below. After several minutes, hydrogen gas bubbles form on its surface, and the coil of magnesium ribbon …

https://chem.libretexts.org/Bookshelves/Inorganic_Chemistry/Supplemental_Modules_and_Websites_(Inorganic_Chemistry)/Descriptive_Chemistry/Elements_Organized_by_Block/1_s-Block_Elements/Group__1:_The_Alkali_Metals/2Reactions_of_the_Group_1_Elements/Reactions_of_Group_1_Elements_with_Water

https://chem.libretexts.org/Bookshelves/Inorganic_Chemistry/Supplemental_Modules_and_Websites_(Inorganic_Chemistry)/Descriptive_Chemistry/Elements_Organized_by_Block/1_s-Block_Elements/Group__1:_The_Alkali_Metals/2Reactions_of_the_Group_1_Elements/Reactions_of_Group_1_Elements_with_Water
Reactions of Group 1 Elements with Water – Chemistry LibreTexts
30 juin 2023Page ID. All of Group 1 elements —lithium, sodium, potassium, rubidium and cesium react vigorously or even explosively with cold water. In each case, the aqueous metal hydroxide and hydrogen gas are produced, as shown: 2X(s) + 2H2O(l) → 2XOH(aq) +H2(g) 2 X ( s) + 2 H 2 O ( l) → 2 XOH ( aq) + H 2 ( g) where X X is any Group 1 metal.

https://www.toppr.com/ask/question/why-does-calcium-float-in-water

https://www.toppr.com/ask/question/why-does-calcium-float-in-water
Why does calcium float in water? – Toppr
Solution. Verified by Toppr. The reaction of calcium with water is less violent. So, the heat released is not sufficient for the hydrogen to catch fire. Calcium starts floating because the bubbles of hydrogen gas which are formed during the reaction stick to the surface of the metal and hence calcium floats on . Was this answer helpful?

https://www.chemguide.co.uk/inorganic/group2/reacth2o.html

https://www.chemguide.co.uk/inorganic/group2/reacth2o.html
Reactions of the Group 2 elements with water – chemguide
After several minutes, some bubbles of hydrogen form on its surface, and the coil of magnesium ribbon usually floats to the surface. However, the reaction soon stops because the magnesium hydroxide formed is almost insoluble in water and forms a barrier on the magnesium preventing further reaction. (s) + 2H 2 O(l) Mg(OH) 2 (s) + H 2 (g)

https://www.sciencetimes.com/articles/46955/20231107/why-objects-float-water-understanding-role-buoyancy-density-phenomenon-floating.htm

https://www.sciencetimes.com/articles/46955/20231107/why-objects-float-water-understanding-role-buoyancy-density-phenomenon-floating.htm
Why Do Objects Float on Water? Understanding the Role of Buoyancy and …
7 nov. 2023This density factor is crucial in understanding why some objects float while others sink in fluids like water. Density serves as the deciding factor when it comes to an object’s buoyancy.

https://phys.libretexts.org/Courses/Skyline/Survey_of_Physics/06:_Fluid_Statics/6.06:_Archimedes_Principle

https://phys.libretexts.org/Courses/Skyline/Survey_of_Physics/06:_Fluid_Statics/6.06:_Archimedes_Principle
6.6: Archimedes’ Principle – Physics LibreTexts
Figure 6.6.3: (a) An object submerged in a fluid experiences a buoyant force FB. If FB is greater than the weight of the object, the object will rise. If FB is less than the weight of the object, the object will sink. (b) If the object is removed, it is replaced by fluid having weight wfl.

https://phys.libretexts.org/Bookshelves/Classical_Mechanics/Classical_Mechanics_(Dourmashkin)/27:_Static_Fluids/27.6:_Archimedes’_Principle_-_Buoyant_Force

https://phys.libretexts.org/Bookshelves/Classical_Mechanics/Classical_Mechanics_(Dourmashkin)/27:_Static_Fluids/27.6:_Archimedes’_Principle_-_Buoyant_Force
27.6: Archimedes’ Principle – Buoyant Force – Physics LibreTexts
20 juill. 2022Solution. We neglect the buoyant force due to the displaced air because it is negligibly small compared to the buoyant force due to the water. The beaker, with the floating block of wood, is shown in Figure 27.10. Figure 27.10 Block of wood floating in a beaker of water. (a) The density of the block of wood is ρb = Mb / Vb = Mb / Abh The …
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