Atomic structure

Recap quiz

What is the term for the number of protons in an atom?

1. Valence electron
2. Nuclear charge
3. Atomic number
4. Mass number

What is the central part of an atom where protons and neutrons are located?

1. Orbitals
2. Electron cloud
3. Nucleus
4. Atomic number

Which subatomic particle has a negligible mass?

1. Proton
2. Electron
3. Positron
4. Neutron

What is the total number of protons and neutrons in an atom?

1. Atomic number
2. Electron cloud
3. Atomic mass
4. Nucleus charge

What is the subatomic particle with a positive charge?

1. Photon
2. Neutron
3. Proton
4. Electron

Atomic number and mass number

Atomic number: total number of protons in an atom.

Mass number: total number of protons+neutrons

Isotopes

Atoms with same atomic number with different mass number.

Give this definition in terms of number of protons and neutrons.

specific charge of a nucleus

Nuclear stability

Task 2: Write down what you about the two fundamental forces that you have seen so far.

Force in the nucleus

Can we use the forces mentioned in your previous task to define the structure of a nucleus?

The strong Nuclear force