CBSE · Class 9 · Science

Structure of an Atom

Chapter 8Matter — Its Nature and BehaviourCBSE / NCERT · Secondary & Senior Secondary

3 worlds · 2 labs for this chapter.

Topics

Atomic structure
- Subatomic particles
- Thomson, Rutherford and Bohr models
- Electron distribution through element 18
- Atomic number and mass number
- Isotopes and isobars

Learning objectives

Determine particle counts and electron distribution from an atom’s atomic and mass numbers.

Worlds

Places to explore freely · 3 worlds

Main lab

Built for this chapter · 1 lab

Main labStructure of the AtomChemistry

More labs

Also fit this chapter · 1 lab

LabAtomic TheoryChemistry

Practice

Questions for Class 9 Science, with worked answers, on screen or as a printed paper.

Open the question bank

CBSE · Class 9 · Science

Structure of an Atom

Chapter 8Matter — Its Nature and BehaviourCBSE / NCERT · Secondary & Senior Secondary

3 worlds · 2 labs for this chapter.

Topics

Atomic structure
- Subatomic particles
- Thomson, Rutherford and Bohr models
- Electron distribution through element 18
- Atomic number and mass number
- Isotopes and isobars

Learning objectives

Determine particle counts and electron distribution from an atom’s atomic and mass numbers.

Worlds

Places to explore freely · 3 worlds

Main lab

Built for this chapter · 1 lab

Main labStructure of the AtomChemistry

More labs

Also fit this chapter · 1 lab

LabAtomic TheoryChemistry

Practice

Questions for Class 9 Science, with worked answers, on screen or as a printed paper.

Open the question bank

Topics

Atomic structure

Learning objectives

Worlds

Main lab

More labs

Practice

Topics

Atomic structure

Learning objectives

Worlds

Main lab

More labs

Practice