This simulation explores the relationship between mass, moles, molecules and atoms. Select one of the 6 compounds, set the mass of the compound, and release the scrollbar to calculate.

Article defines and explains compounds which are either ionic or covalent and molecules which are the simplest unit of a covalent compound. Molecules can be represented in many different ways.

This online textbook chapter provides learners with advanced-level material on the structure and relationships between atoms, molecules and ions.

Starting from atoms, see how many molecules you can build. Collect your molecules and see them in 3D.

Starting from atoms, see how many molecules you can build. Collect your molecules and see them in 3D!

Through this activity, students work with macromolecules, proteins and nucleic acids. The focus is on the atomic structure of proteins, how linear polymers are made, and the surface charges of the resulting polymers. . Multiple-choice...

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...

Build a molecule in 3-D. Add single, double, and triple bonds, or a lone pair of electrons to an atom, learn what the molecule's geometric name is, see the bond angles, and manipulate each molecule to view it from all sides. Then study a...

Explore molecule shapes by building molecules in 3D. How does molecule shape change with different numbers of bonds and electron pairs? Find out by adding single, double or triple bonds and lone pairs to the central atom. Then, compare...

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...

[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.

As part of the introduction to the Periodic Table of the Elements, students will be introduced to the idea of atoms, molecules, and chemical reactions.

Here you will learn how to understand, write, draw, and talk-the-talk of organic molecules. Why were different drawing techniques developed? Organic molecules can get complicated and large. It is a tedious to have to constantly draw out...

Everythingin the universeis either matter or energy. All matter is made of combinations of about one hundred basic building blocks, the chemical elements on the periodic table. Going a step further and breaking these elements down to...

An explanation the mole (named for molecule) and Avogadro's Number. One mole of a substance is equal to 6.022 times 10 to 23rd power units of that substance (such as atoms, molecules, or ions). The number 6.022 time 10 to 23rd power is...

Web-based activity walks learners through the use of spectroscopy in determining the identity of atoms and molecules by defining the excited state of atoms, the frequencies of emitted photons, and atoms' ability to absorb them....

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

With this activity students will observe and record the properties of various types of bar soap. They will discover that due to the ingredients some soaps are denser than others, and ivory soap will actually float. Students will see a...

[Free Registration/Login Required] Build your own helium atom and make sure it has the correct number of protons, electrons, and neutrons on this site. Site also includes a small quiz on the topic.

[Free Registration/Login Required] Given prior knowledge of bonding and the molecular make up of aspartame, examine the model and determine which color represents which atom. Drag the labels at the bottom to the appropriate colored atom...

[Free Registration/Login may be required to access all resource tools.] The following online tutorial describes how the electronegativity difference between two atoms in a covalent bond results in the formation of a nonpolar covalent,...

A module with animations, explanations, and questions about the importance of electrons in the structure of an atom. Understand the definition and locations of electrons in the atom. Explore the role of electrons in bonding, polarity,...

Kid's learn about the science of the molecules. Tiny chemistry and compounds of atoms and elements make up all matter.

[Free Registration/Login Required] Drag the groups of hydroxy and hydrogen atoms to their proper locations to make a complete glucose molecule.