Parts of an Atom

Front

What are the three main parts of an atom?

Back

Protons, Neutrons, Electrons.

Front

What charge do electrons carry?

Back

Electrons carry a negative charge.

Front

Where are protons and neutrons located in an atom?

Back

In the nucleus of the atom.

Front

What is the atomic mass of an atom with 16 protons and 16 neutrons?

Back

32 (Atomic mass is the sum of protons and neutrons).

Front

What did Ernest Rutherford conclude from the Gold-Foil experiment?

Back

He concluded that the atom is mostly empty space.

Front

What is the role of neutrons in an atom?

Back

Neutrons help stabilize the nucleus and contribute to atomic mass.

Front

What is the electron shell?

Back

The region around the nucleus where electrons are likely to be found.

Front

How many electrons can the first energy level hold?

Back

The first energy level can hold up to 2 electrons.

Front

What is the charge of a proton?

Back

Protons carry a positive charge.

Front

What is the significance of the atomic number?

Back

The atomic number indicates the number of protons in an atom and defines the element.