ICSE Class 8 Chemistry Chapter 6 Solutions

What is the definition of a chemical reaction?

During a chemical reaction, what occurs with the atoms of the reacting substances?

What force holds the atoms of a molecule together in a compound?

Which of the following is NOT an example of a characteristic of a chemical reaction?

In a chemical reaction, what happens to the bonds between atoms of the reacting substances?

What is the role of a catalyst in a chemical reaction?

In the context of chemical reactions, what is a negative catalyst?

When hydrogen sulfide gas reacts with chlorine gas, what is the resulting product?

How does light influence some chemical reactions?

Which substance is commonly used as a positive catalyst in the production of ammonia?

What is the product when lead nitrate is heated?

Chemical Reactions

A chemical reaction involves the rearrangement of atoms and the formation of new substances with different properties.
In a chemical reaction, atoms of the reacting substances break existing bonds and form new bonds, resulting in the creation of new molecules and compounds.
The force holding atoms together in a molecule of a compound is the electrostatic force of attraction between the positively charged nucleus of one atom and the negatively charged electrons of another atom.
Physical changes are NOT characteristics of a chemical reaction. These include changes in state, size, or shape.
During a chemical reaction, bonds between atoms are broken and new bonds are formed, leading to the formation of new products.
A catalyst speeds up a chemical reaction without being consumed in the process.
A negative catalyst, also known as an inhibitor, slows down a chemical reaction.
The reaction of hydrogen sulfide gas with chlorine gas produces sulfur and hydrochloric acid as products.
Light can initiate, accelerate, or modify certain chemical reactions by providing the necessary energy for bond breaking or formation.
Iron is commonly used as a positive catalyst in the production of ammonia.
Heating lead nitrate results in the formation of lead oxide, nitrogen dioxide, and oxygen as products.

Get expert solutions for Chapter 6 - Chemical Reactions from the Selina textbook for ICSE Class 8 Chemistry students. The solutions cover fundamental topics presented in a simple language to help students understand the concepts better and excel in their examinations.