Question

any one answer this please​

Answer 1

Answer:

i . is the chemical change

Answer 2

Answer:

Magnesium Wire is Burnt in air.

When magnesium Wire is Burnt in air, then magnesium oxide is formed.

Equation : Mg + O2 -> MgO

Here, two reactants reacts to form a single compound. So, it is a Combination Reaction.

(ii).

Electric Current is passed through water.

When electric current is passed through water, then it decomposes to form Hydrogen and Oxygen ion.

Equation : H2O --> H2 + O2

Here, a single compound decomposes to form two compounds. So, it is a Decomposition Reaction.

(iii).

Ammonia and Hydrogen Chloride gases are mixed.

When ammonia and Hydrogen Chloride is mixed, Ammonium Chloride is formed.

Equation : NH3 + HCl --> NH4Cl.

Here, two reactants combine to form a single compound. So, it is a type of combination Reaction.

Explanation: