Atomic Theory, Types of Radiation and Isotopes Test Grade Boost

Front

What particle is found in the nucleus and has no charge?

Back

Neutron

Front

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

Back

Nucleus

Front

What does the word 'atom' come from in Greek, and what does it mean?

Back

The word 'atom' comes from 'atomos', which means 'indivisible'.

Front

What particle is found in the nucleus and has a positive charge?

Back

Proton

Front

What is the charge of an electron?

Back

Negative charge.

Front

What is the charge of a proton?

Back

Positive charge.

Front

What is the charge of a neutron?

Back

No charge (neutral).

Front

What is an isotope?

Back

Atoms of the same element that have the same number of protons but different numbers of neutrons.

Front

What is the atomic number of an element?

Back

The number of protons in the nucleus of an atom.

Front

What is the mass number of an atom?

Back

The total number of protons and neutrons in the nucleus.