How much does your class know about subatomic particles? Module 13 in a 14-part series tests their knowledge of how to determine an atom's number of protons, neutrons, and electrons when given the atomic number and the mass...

Looking for a great way to see what young chemists know about atomic structure? In the 14th and final installment in the states of matter series, learners put their skills to the test. The four-part question covers placement of...

This video segment adapted from Discovering Women profiles Fermilab physicist and Harvard professor Melissa Franklin. [4:08]

A video lecture that discusses how elements relate to atoms. Also discussed are protons, electrons, and neutrons. [13:08]

Video tutorial explores how elements relate to atoms and provides the basics of how protons, electrons, and neutrons make up an atom. [13:08]

Check your understanding of how to use the atomic number and the mass number to represent different isotopes. [9:43]

A video and a short quiz on electricity, covering static electricity, lightning, and energy generated from electricity. [3:20]

How elements relate to atoms. The basics of how protons, electrons, and neutrons make up an atom. [13:09]

In this video, learn how atoms are made up of protons, neutrons, and electrons. Elements are defined by the atomic number, the number of protons in the nucleus. The mass of an atom is determined by the total number of protons and...

This lesson explains what is represented by the atomic number, and how it varies from one element to the next. It is 2 of 7 in the series titled "Atomic Number."