Explore and control the building blocks of atoms! Physical science superstars add and remove subatomic particles to create atoms and ions with an easy-to-use interactive. An alternate activity includes an assignment that focuses on the...

Most things naturally strive for balance, and acids and bases are no exception. Neutralization of acids and bases allows scholars to explore the color changes associated with the pH scale. After this exploration, pupils neutralize two...

Can you mix two liquids to make a solid that is insoluble? Yes, you can, and pupils see this as the lesson uses more than one combination of liquids to form a solid. Through two teacher demonstrations and a hands-on activity, scholars...

Learners see how electrons are transferred in the bonding of NaCl. They then create models of NaCl using styrofoam balls and toothpicks to assist them in explaining the formation of ions and ionic bonding. 

Young chemists perform an experiment to determine if a compound is iron (II) chloride or iron (III) chloride. Then they determine the formula, balance the equation, and answer analysis questions. 

A huge slide show provides a review of almost every topic there is to cover in basic chemistry! Your young scientists will be interested to see each illustration and example given. The appearance of the 120 slides varies greatly, most...

The National Chemistry Olympiad exams are comprehensive tests covering an entire  year of chemistry concepts. You can use them as practice for competing in the challenge, or simply as a review, or as an actual final exam for your general...

The 2009 version of the first part of a national chemistry competition is posted for your use with olympiad hopefuls. Test takers deal with 60 multiple choice questions covering an entire year of chemistry curriculum. Use this to...

This 60-question comprehensive exam was designed to determine who would go on to compete in the 2000 US National Chemistry Olympiad. Hopefuls answer multiple choice questions regarding all chemistry topics taught in the first year...

Here is a unique assigment: compare and contrast ionic and covalent compounds in an extensive data table and then analyze Lewis dot structures in antoher. Three columns are to befilled in: "characteristic or feature," "applies to ionic...

This is an online exercise in which chemistry learners answer a series of multiple choice questions about bonding. Topics addressed include ionic and covalent bonds, electronegativity, ions, valence electrons, resonance structure, and...

What a cute approach to chemical bonding! Atoms all have human names and are attending at a dance. Who will pair up with whom? By reading the characteristics, and not the element name, chemistry whizzes figure out the bonding pairs....

An engaging activity enlightens young chemists in this lesson on atomic structure. They play musical chairs through a series of concentric circles that represent electon orbitals. A laundry basket in the middle holds the protons and...

This video continues from the previous topic and specifies how the elimination reaction between moderately electronegative molecules is controlled.

In this charge and electricity worksheet, students read about electric charges and how they are created in atoms. They also read about the unit of charge, called the Coulomb, conductors, and insulators. Emerging electricians match 11...

Sixty multiple-choice chemistry questions make up this comprehensive exam used for the 2001 US National Chemistry Olympiad. Every topic that you would expect to approach in a general chemistry class is queried on. You could easily use...

High school chemists chart the properties of different types of solids after considering their various intermolecular forces. They examine ionic and metallic bonding and draw electron dot structures for several different compounds. This...

The foundational chemistry skill of naming simple compounds is practiced thoroughly by completing this worksheet. This is a marvelous way for your chemists to show what they have learned. In some instances, the chemical formula is...

Sal discusses what happens to elements when they become ionized. He demonstrates that when neutral atoms become ionized, it can significantly change their relative atomic sizes. He uses the Periodic Table of the Elements to illustrate...

What's all the buzz about electricity? Scholars take part in a scientific activity to test the conductivity of liquids and solutions. They first see if water, salad oil, alcohol, and vinegar cause a buzzer to buzz when electrodes are...

Responsible farming is important for maintaining natural resources. Eager scientists complete a WebQuest to explore what happens to nitrogen when it enters the soil. They learn about the chemical makeup of nitrogen-based molecules and...

Nitrogen is an essential element for productive farming. An interactive lesson explores the chemical makeup of different fertilizers and their corresponding nitrogen content. The interactive challenges individuals to complete molecular...

How do the different types of soil allow water to flow? Scholars compare flocculated and dispersed soils and their ability to move water through the soil. Silt, sand, and clay particles clump together and create large pores in the soil...

Why are neon signs so bright and colorful? Scholars discover how artists create neon signs and find out that neon is not the only gas they use in their production. Next, they explore the history of neon signs and how their development...