activity you have to perform of your own and related answer you have to write in notebook
Answers
Answer:
Activity 1.1 :-
In this Activity, From the above Image, you understand the Procedure to do the reaction. But what you will get after the Reaction will be completed.
When you heat the Magnesium in the Presence of Oxygen Then it starts burning with the White Dazzling white Flame and then converted into the White color powder that is Magnesium Oxide (MgO).
Important Questions Related to this Activity :-
Q. What will happen when magnesium ribbon is burnt in air?
Ans. Magnesium ribbon burns with a dazzling flame and white powder is collected on the watch glass placed under it. The white powder is magnesium oxide formed by the reaction of magnesium and oxygen present in the air.
Q. What is the Color of magnesium?
Ans. The color of magnesium is silvery-white. And after Burning in the presence of Oxygen, the color Changes to white.
Magnesium (Mg) ⎯⎯→ Silvery White Color
Magnesium oxide (MgO) ⎯⎯→ White color
Activity 1.2 :-
Again from the Above image, you Understand what the procedure to do for performing this reaction. Watch this video till end to understand the procedure with more clarification.
In this activity of NCERT, When Lead Nitrate [Pb(NO3)2] reacts with Potassium Iodide(KI), a yellow color of Precipitate (ppt.) is Formed. You can see above in the video, How the reaction takes place.
When two Colourless compound Lead nitrate and Potassium Iodide combine with each other, they form a new yellow color semi-soluble compound that is Lead Iodide (PbI2) which is insoluble in water. This reaction was also an example of a Double Displacement reaction.
Important Questions Related to this Activity :-
Q. What is Precipitation Reaction ?
Ans. This is a type of reaction in which when two Aqueous soluble solutions Combine/React together to form a semi-soluble Salt, that salt is called as Precipitate. And in any reaction, when Precipitate is formed then that is called a Precipitation reaction.
Q. Give some More Examples of Precipitation Reaction ?
Ans. Some more examples of Precipitation reactions are:-
AgNO3(aq) + KCl(aq) ⎯⎯→ AgCl(ppt.) + KNO3(aq)
2KOH(aq) + CaCl2(aq) ⎯⎯→ Ca(OH)2(aq) + 2KCl(aq)
