Question

2. What is a decomposition reaction? Give an example of a decomposition reaction Describe an
activity to illustrate such a reaction by heating​

Answer 1

Answer:

Chemical decomposition, or chemical breakdown, is the process or effect of simplifying a single chemical entity into two or more fragments. Chemical decomposition is usually regarded and defined as the exact opposite of chemical synthesis.

example:When lead nitrate is heated in a test tube, it forms lead oxide, nitrogen dioxide and oxygen. white incolour in a test tube. Heat this test tube over a flame. Observation: Brown fumes are evolved and brownish residue is left in the test tube

Answer 2

Answer:

Chemical decomposition, or chemical breakdown, is the process or effect of simplifying a single chemical entity into two or more fragments. Chemical decomposition is usually regarded and defined as the exact opposite of chemical synthesis

Example of a decomposition reaction: When lead nitrate is heated in a test tube, it forms lead oxide, nitrogen dioxide and oxygen.

Activity: Take lead nitrate powder which is

white incolour in a test tube. Heat this test tube over a flame.

Observation: Brown fumes are evolved and brownish residue is left in the test tube.

Conclusion: Decomposition of lead nitrate is a thermal decomposition reaction.