Question

Explain mE_____

No SpAm​

Answer 1

Answer:

Metals react with water and produce a metal oxide and hydrogen gas. It reacts with hot water to form magnesium hydroxide and hydrogen. It also starts floating due to the bubbles of hydrogen gas sticking to its surface. Metals like aluminium, iron and zinc do not react either with cold or hot water.

Explanation:

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Answer 2

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⇝What we need to know

When metal reacts with water?

When a metal reacts with water, a metal hydroxide and hydrogen are formed. As the metal release electrons. These negatively charged particles generate heat as they leave the metal. Along the way, They also break apart the water molecules.

Example✔️

• sodium(Na) reacts with water

• Calcium hydroxide is slightly soluble in water so once the solution is saturated, it starts to become milky as solid calcium hydroxide appear.

some metals reacts vigorously even with cold water (Sodium, Potassium) , some reacts with hot water(Magnesium), some metals reacts with steam(Aluminium, iron)whereas some metals do not react even with steam(GOLD, Copper).

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