Sodium and magnesium reacting with water

Question 1

sodium and water chemical formula

Answer 1

2Na (s) + 2H2O (l) → 2NaOH (aq) + H2 (g)

Question 2

Sodium reacts vigorously with what kind of water

Answer 2

cold water

Question 3

What happens during the sodium water reaction including what flame forms

Answer 3

The sodium melts into a ball and moves across the water surface until it disappears

small orange flame

Question 4

What forms in sodium water reaction

Answer 4

Hydrogen gas is given off
The solution formed is strongly alkaline (pH 14) due to the sodium hydroxide which is formed

Question 5

Magnesium reacts extremely slowly with …………. water

Answer 5

cold

Question 6

Cold water and magnesium chemical formula

Answer 6

Mg (s) + 2H2O (l) → Mg(OH)2 (aq) + H2 (g)

Question 7

Cold water and magnesium chemical formula what kind of solution is formed

Answer 7

The solution formed is weakly alkaline (pH 9-10) as magnesium hydroxide is only slightly soluble

Question 8

However, when magnesium is heated in steam, it reacts ………..

to make what

Answer 8

vigorously with steam to make magnesium oxide and hydrogen gas:
Mg (s) + H2O (g) → MgO (s) + H2 (g)