Inside the Atom
Structure of an Atom
Structure
- Atoms are made up of protons, neutrons and electrons.
- At the centre of every atom, there is a nucleus which contains a certain combination of protons and neutrons
- Protons and neutrons are both known as Nucleons
- Orbiting the nucleus are electrons
- Most of the atom is empty space
Charges and Masses
Charges of particles inside atoms
| Particle | Charge (C) | Mass (kg) |
|----------|--------------|-------------|
| Proton | +1.60x10^-19 | 1.67x10^-27 |
| Neutron | 0 | 1.67x10^-27 |
| Electron | -1.60x10^-19 | 9.11x10^-31 |
Relative charges of particles inside atoms
| Particle | Charge (C) | Mass (kg) |
|----------|--------------|-----------|
| Proton | Positive, +1 | 1 |
| Neutron | 0 | 1 |
| Electron | Negative, -1 | 0.0005 |