EVERYDAY SCIENCE

Detailed explanation-1: -Magnesium is a very reactive metal. It will react with hydrochloric acid to form magnesium chloride and hydrogen gas. The reaction will take place as follows: Mg(s)+2HCl(aq)→MgCl2(aq)+H2(g)

Detailed explanation-2: -Magnesium reacts with hydrochloric acid according to the equation: Mg(s) + 2 HCl(aq)–> MgCl 2(aq) + H 2(g) This demonstration can be used to illustrate the characteristic reaction of metals with acid, a single replacement reaction, or to demonstrate the generation of hydrogen gas.

Detailed explanation-3: -The answer is a. single displacement reaction. Single displacement reactions are those that involve the replacement of an element in another compound. In the reaction given, magnesium metal reacts with hydrochloric acid resulting in the formation of magnesium chloride and hydrogen gas.

Detailed explanation-4: -As we can see that hydrochloric acid reacts with magnesium and produces hydrogen gas and magnesium chloride. Here, we can see that the formation of hydrogen gas occurs due to the chemical changes of hydrochloric acid and magnesium. So, we can see that the given phenomenon is a simple example of chemical change.