TOPIC 8: Atoms and the Periodic Table

Front

What is an Atom?

Back

The basic particle from which all elements are made; the smallest particle of an element that has the properties of that element.

Front

What is an Electron?

Back

A negatively charged tiny particle that moves around the outside of the nucleus of an atom.

Front

What is a Nucleus?

Back

The central core of an atom which contains protons and neutrons.

Front

What is a Proton?

Back

A small, positively charged particle that is found in the nucleus of an atom.

Front

What is a Neutron?

Back

A small particle in the nucleus of an atom with no electrical charge.

Front

What is Atomic Number?

Back

The number of protons in the nucleus of an atom.

Front

What is an Isotope?

Back

An atom with the same number of protons and a different number of neutrons from other atoms of the same element.

Front

What is Mass Number?

Back

The sum of protons and neutrons in the nucleus of an atom.

Front

What does Theory mean?

Back

An explanation.

Front

What does Atomos mean?

Back

Uncuttable.