A well designed clear tutorial explaining the energies involved in the Bohr model of the atom. Illustrations add to the clearly presented equations.

Students build atoms of elements 1-20. The entire set can be hung from the ceiling in order of the Periodic Table to be referred to throughout the Chemistry class/unit. This is helpful when teaching bonding and patterns of the Periodic...

In this activity, young scholars will explore several different models of the hydrogen atom and compare and contrast them using an online java applet.

How Bohr's model of hydrogen explains atomic emission spectra.

An explanation using quantum mechanics to describe the atom.

Describe how the model of the atom advanced as scientific knowledge increased. This lesson is 3 of 3 in the series titled "Models of the Atom."

Students work as engineers to learn about the properties of molecules and how they move in 3D space through the use of LEGO MINDSTORMS NXT robotics. They design and build molecular models and use different robotic sensors to control the...

A slideshow looking at the contributions of scientists over time to our understanding of atomic theory. Looks at models of the atom developed by Democritus, John Dalton, J.J. Thomson, Ernest Rutherford, Niels Bohr, and James Chadwick, as...

A detailed slideshow for Grade 8 students that looks at the history of our understanding of atoms. Looks at the ideas presented by Democritus, John Dalton, J.J. Thomson, Ernest Rutherford, and Niels Bohr, and the modern-day wave model. A...

Illustrated instructions for how to make a model of an atom (an atom mobile).

[Free Registration/Login may be required to access all resource tools.] In the following online tutorial students will distinguish between the three main subatomic particles and understand the contributions of J. J. Thomson, Robert...

[Free Registration/Login may be required to access all resource tools.] Students will learn about the history of atomic theory, and the development of the Bohr model of the atom. Includes a simulation for exploring the Bohr Model.

In this lab, students investigate basic electron structure by making a model using pennies and different sized filter papers.

A description of quantum theory, the Bohr model of the atom, the quantum mechanical atom, the Scrodinger equation, and quantum numbers.

Describe how the model of the atom advanced as scientific knowledge increased. This lesson is 2 of 3 in the series titled "Models of the Atom."

Describe how the model of the atom advanced as scientific knowledge increased. This lesson is 1 of 3 in the series titled "Models of the Atom."

Short slideshow looking at the history of models of the atom, including the contributions of Aristotle, Democritus, John Dalton, J.J. Thomson, Ernest Rutherford, and Niels Bohr.

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...

[Free Registration/Login may be required to access all resource tools.] Rutherford's discovery of the nucleus and his planetary model of the atom.

[Free Registration/Login may be required to access all resource tools.] Atoms and how they are related to elements, and the particles that make up atoms.

[Free Registration/Login Required] Shown here are representations of three different models of the atom. Move the name labels to correctly title each of the models with the scientist who created them.

Activity 4 of this module determines: Which model best supports our observations? This activity reviews the evidence gathered in this investigation and considers how that evidence informs your model of matter. A timeline of the history...

A brief explanation is provided for designing a stable atom. You can also refer to a labeled model of a carbon atom. This resource also has a link to an atom building activity.

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.