Atoms and Periodic Table

Front

What is an atom?

Back

An atom is the smallest unit of matter that retains the properties of an element. It consists of protons, neutrons, and electrons.

Front

What is the atomic number of an element?

Back

The atomic number is the number of protons in the nucleus of an atom, which determines the element's identity.

Front

What are protons?

Back

Protons are positively charged particles found in the nucleus of an atom.

Front

What are neutrons?

Back

Neutrons are neutral particles found in the nucleus of an atom, contributing to the atomic mass.

Front

What are electrons?

Back

Electrons are negatively charged particles that orbit the nucleus of an atom.

Front

What is a semiconductor?

Back

A semiconductor is a material that has electrical conductivity between that of a conductor and an insulator, often used in electronic devices.

Front

How can you determine if an atom is neutral?

Back

An atom is neutral if it has the same number of protons and electrons.

Front

What is the relationship between protons and atomic mass?

Back

The atomic mass of an element is approximately equal to the sum of its protons and neutrons.

Front

What is the charge of protons and electrons?

Back

Protons have a positive charge, while electrons have a negative charge.

Front

Where are protons and neutrons located in an atom?

Back

Protons and neutrons are located in the nucleus of an atom.