Young scientists construct an understanding of molecular compounds in this hands-on science lesson. Using LEGO® to model the atoms of different elements, students build molecules based on the chemical formulas of common compounds.

Did you know baking powder can be used to treat acne, whiten teeth, and make sugar cookies? The instructional activity on the development of baking powder is ready-to-go with no preparation required. Through readings, pupils answer...

Students discover that ionic bonding occurs when electrons are transferred from one atom to the other and not shared as in covalent bonding.

Students discover the concept that two atoms can attract and form a covalent bond.

After observing a demonstration of a chemical reaction between a burning candle and the oxygen in the air, young scholars use atom model cut-outs to model the reaction and see that all the atoms in the reactants show up in the products.

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

Students will conduct two chemical reactions: endothermic and exothermic. They will see an animation that shows that it takes energy to break bonds and that energy is released when new bonds are formed, and use that animation to explain...

Media-rich lesson in which students discover that it takes energy to break bonds, and that energy is released when bonds are formed during the process of dissolving. They also determine whether dissolving is either exothermic or...

Students use their own model of a salt crystal and water molecule to show how water dissolves salt. Then, they relate their observations to the structure of salt, water, and alcohol on the molecular level.

Lesson plan in which students design an experiment to determine if different types of liquids affect the amount of dissolution of an M&M candy shell.