Elements and Periodic Table Flashcard

Front

What is an element?

Back

A substance that cannot be broken down into simpler substances by chemical means, made up of atoms with the same number of protons.

Front

What is the Periodic Table?

Back

A tabular arrangement of elements organized by increasing atomic number, showing periodic trends in properties.

Front

What is an atomic number?

Back

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

Front

What is atomic mass?

Back

The weighted average mass of an element's isotopes, measured in atomic mass units (amu).

Front

What are protons?

Back

Positively charged particles found in the nucleus of an atom.

Front

What are neutrons?

Back

Neutral particles found in the nucleus of an atom, contributing to atomic mass.

Front

What are electrons?

Back

Negatively charged particles that orbit the nucleus of an atom.

Front

How do you calculate atomic mass?

Back

By adding the number of protons and neutrons in an atom.

Front

What is the significance of the atomic number?

Back

It determines the element's position in the periodic table and its chemical properties.

Front

What is an isotope?

Back

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