Home
Class 10
CHEMISTRY
Name two metals that start floating afte...

Name two metals that start floating after sometime when immersed in water and explain why they do so.

Text Solution

Verified by Experts

The two metals are :
(i) Calcium (Ca)
(ii) Magnesium (Mg)
They start floating because the bubbles of hydrogen gas which are formed during the reaction stick to the surface of the metal.
Promotional Banner

Topper's Solved these Questions

  • METALS AND NON-METALS

    OSWAAL PUBLICATION|Exercise TOPIC - 1 Short Answer Type Questions - II|17 Videos

  • METALS AND NON-METALS

    OSWAAL PUBLICATION|Exercise TOPIC - 2 (MULTIPLE CHOICE QUESTIONS)|2 Videos

  • METALS AND NON-METALS

    OSWAAL PUBLICATION|Exercise TOPIC - 1 Very Short Answer Type Questions|10 Videos

  • CHEMICAL REACTIONS AND EQUATIONS

    OSWAAL PUBLICATION|Exercise NCERT CORNER (Textbook Exercises)|20 Videos

  • PERIODIC CLASSIFICATION OF ELEMENTS

    OSWAAL PUBLICATION|Exercise NCERT CORNER - TEXTBOOK EXERCISES|10 Videos

Similar Questions

Explore conceptually related problems

Why do silver articles become black after sometime when exposed to air ?

Why do silver articles become black after sometime when exposed to air ?

According to the third law of motion when we push on an object, the object pushes back on us with an equal and opposite force. If the object is a massive truck parked along the roadside, it will probably not move. A student justifies this by answering that the two opposite and equal forces cancel each other. Comment on this logic and explain why the truck does not move.

Does a prism disperse when immersed in water ? If so, how is its spectrum affected ?

In case of a fire , before the fireman use the water hoses , they shut off the main electrical supply for the area. Explain why they do this.

(a) Crystals of a substance their colour on heating in a closed test tube but regained it after sometime when they were allowed to cool down. Name the substance and write its formula and explain the phenomenon involved. (b) name the acid and base that would be used to prepare the following salts: (i) Potassium sulphate (ii) Ammonium chloride.

Why do different colours get separated when a white light passes through a prism ? How can we recombine the components of white light after a prism has separated them ? Explain with the help of a figure.