Question

When sodium is put in water, the metal floats on the surface and reacts to form sodium

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Answer 1

Answer: Sodium also floats on the surface, but enough heat is given off to melt the sodium (sodium has a lower melting point than lithium and the reaction produces heat faster) and it melts almost at once to form a small silvery ball that dashes around the surface.

Step-by-step explanation:

Answer 2

hydroxide.

Step-by-step explanation:

Alkali metals are in group 1 of the Periodic Table. They are on the left of the Periodic Table. These are the alkali metals as follows:

• Lithium
• Sodium
• Potassium
• Rubidium
• Caesium
• Francium

When alkali metals react with water they make alkaline solutions, so the universal indicator turns people and they produce hydrogen and a metal hydroxide. When sodium is put in water, the metal floats on the surface it reacts to form sodium hydroxide and hydrogen.