Atomic Structure and Bohr Models

Front

What particles are found in the nucleus of an atom?

Back

Protons and neutrons.

Front

What is the atomic number of an atom?

Back

The atomic number is the number of protons in the nucleus of an atom.

Front

What is the mass number of an atom?

Back

The mass number is the total number of protons and neutrons in the nucleus.

Front

Who is known for creating the term 'atom'?

Back

Democritus, who coined the term meaning indivisible.

Front

What is the maximum number of electrons in the first shell (energy level)?

Back

2 electrons.

Front

What is the charge of a proton?

Back

Positive charge.

Front

What is the charge of a neutron?

Back

Neutral charge.

Front

What is the charge of an electron?

Back

Negative charge.

Front

What is the relationship between atomic number and the number of electrons in a neutral atom?

Back

In a neutral atom, the number of electrons equals the atomic number.

Front

What is the significance of the nucleus in an atom?

Back

The nucleus contains protons and neutrons, which determine the atom's mass and identity.