Periodic Table Vocabulary List

What is the smallest unit of an element that retains its properties, made of protons, neutrons, and electrons?

• Atom

• Molecule

• Ion

• Compound

A pure substance made of one type of atom, found on the periodic table, is called a(n) ________.

• Element

• Compound

• Mixture

• Solution

Which chart organizes elements by atomic number, showing patterns in their properties?

• Periodic Table

• Bar Graph

• Venn Diagram

• Pie Chart

The number of protons in an atom’s nucleus, identifying the element, is called its ________.

• Atomic Number

• Mass Number

• Isotope Number

• Atomic Mass

The average mass of an atom, based on protons and neutrons, is called ________.

• Atomic Mass

• Atomic Number

• Isotope Number

• Electron Mass

A vertical column in the periodic table where elements have similar properties is called a ________.

• Group

• Period

• Block

• Series

A horizontal row in the periodic table, showing elements with increasing atomic numbers, is called a ________.

• Period

• Group

• Family

• Block

A positively charged particle in an atom’s nucleus is called a ________.

• Proton

• Electron

• Neutron

• Photon

Tags

NGSS.MS-PS1-1

A neutral particle in an atom’s nucleus, contributing to its mass, is called a ________.

• Neutron

• Proton

• Electron

• Photon

What is the definition of Electron?

• A negatively charged particle orbiting an atom’s nucleus, involved in bonding.

• A positively charged particle found in the nucleus of an atom.

• A neutral particle found in the nucleus of an atom.

• A molecule that forms the cell membrane.

Tags

NGSS.MS-PS2-3