[Free Registration/Login may be required to access all resource tools.] Describes research on the proton and the determination of the weight of proton and electron.

A video and a short quiz on the parts of an atom, the periodic table, and molecules.

Build an atom out of protons, neutrons, and electrons, and see how the element, charge, and mass change. Then play a game to test how the ideas work!

Explore how changing the numbers of protons, neutrons, and electrons affect the type of atom.

Acting as an overview from the General Chemistry Virtual Textbook, this site explores acids and bases and various topics connected to them, including electron pairs, proton donors, proton acceptors, acid-base reactions, and more.

Six middle school chemistry lessons about the periodic table and bonding complete with handouts and animations.

Find out if you know enough about atoms to build them. The goal of the activity is to build an atom of a particular element by dragging the correct numbers of neutrons, protons and electrons into the atom.

In this elementary science activity, students will experiment with static electricity using balloons. After investigating how balloons attract and repel various objects, students will watch a simulation of static electricity to help gain...

This unit covers introductory concepts of mixtures and solutions. Students think about how mixtures and solutions, and atoms and molecules can influence new technologies developed by engineers. The first lesson explores the fundamentals...

Build elements and molecules using neutrons, protons, and electrons. Choices include helium, carbon, oxygen, aluminum, water, and salt.

Learn how to read the periodic table of elements as you solve these Math questions about the number of protons, neutrons, electrons or nucleons in an atom of an element. You can choose how many questions to answer, and how complex they...

Introduces learners to atomic models of the past and present, focusing on the orbital model and an explanation of its basis. Learners then have the opportunity to "make an atom" and contrast it with an ion, followed by an isotope. The...

An interesting and useful tool to practice recognition/calculation of atomic number, mass, and number of neutrons, electrons, etc. Can be used with all elements.

This lesson will explain that electrons are negatively charged particles with negligible mass and are found in pairs in orbitals surrounding the nucleus of an atom. It is 3 of 3 in the series titled "Subatomic Particles: The Electron."

This animation discusses electrons and the properties of electrons in a storybook format featuring hairy monsters, strange rocks, and fun animations.

This is 21-question multiple choice quiz over chemical bonds was written for a 7th-grade science class.

This lesson will explain that protons are positively charged particles having a mass of one amu and are found in the nucleus of the atom. It is 2 of 3 in the series titled "Subatomic Particles: The Proton."

Dutch version of the well-known "Particle Adventure" physics website that teaches students about atoms, mass, particle physics, and quantum physics. The site discusses theories related to physics and provides other links related to the...

Learn the fundamentals of particles and forces with this site. Explore the paths that explain matter in the universe.

[Free Registration/Login Required] Students explore real numbers through electrons and protons. Click challenge me to answer practice questions and click learn more to complete a learning module on real numbers.

Build an atom out of protons, neutrons, and electrons, and see how the element, charge, and mass change. Then play a game to test your ideas!

This lesson will illustrate that an atom is mostly empty space and has a positively charged, massive core (containing both protons and neutrons called the nucleus) surrounded by negatively charged electrons. It is 2 of 3 in the series...

This Nobel website on the life and scientific work of Robert A. Millikan includes a biography, images, and internet resources for further reading and research. Also included are the 1923 "Presentation Speech" which praised Millikan's...

A fun way to learn about the periodic table! This interactive table allows students to investigate the basic information of an element as well as explore group and family characteristics.