Chemical Reactions

Question 1

What are some ways in which Chemical Reactions differ?

Answer 1

Composition of reactants and products
Thermal effect
Reversibility
The use of a catalyst
Features of the process

Question 2

What are Reactions where the composition is not changed?

Answer 2

In these reactions, changed in structure occur but not in their qualitative compostion.

Question 3

What are examples of reactions where the composition is not changed?

Answer 3

3O2 = 2O3
(oxygen to ozone)

Question 4

What is the Reaction of Connection?

Answer 4

In these reactions, on complex substance if formed from several simple or complex substances

Question 5

What is an example of Reaction Of Connection?

Answer 5

H2O + Li2O = 2LiOH

Question 6

What is the Decomposition reaction?

Answer 6

This is where several new (complex/simple) substances are formed from 1 complex substance

Question 7

What is an example of a Decomposition Reaction?

Answer 7

2KMnO4 = K2MnO4 + MnO2 + O2

Question 8

What is a Substitution reaction?

Answer 8

These are reactions between simple and complex substances as a result of which atoms are replaced in complex substances

Question 9

What is an example of a Substitution Reaction?

Answer 9

Cu + 2AgNO3 = 2Ag + Cu (NO3)2