Grinding solid colorless phenolphthalein indicator and solid colorless magnesium hydroxide base can produce a reaction that causes the mixture to turn pink.
How do Melissa & Doug’s “Water WOW!” Water Reveal coloring books work? Let's do some experiments to find out!
A question set about an effervescent antacid formulation unpacks what is occurring both qualitatively and quantitatively. The student will review and apply formulas, balanced equations, percentage elemental compositions, mass-mass calculations, mole-mole calculations, theoretical yield, and limiting reagent.
Helical structures can be built from media such as LEGO bricks and paper. These structures can be used to model helical structures in chemistry. These include circularly polarized light and various helical biomolecules.
A simple shift in wording can help boost student engagement and understanding.
When iron spheres at room temperature are added to liquid nitrogen, the nitrogen boils as heat is transferred in from the iron. The amount of liquid nitrogen boiled depends on the amount of heat transferred, which depends on the mass of the iron added. However, the rate at which liquid nitrogen boils depends on the surface area of the iron in contact with the liquid nitrogen. These phenomena can be studied with experiments which measure the mass lost by the boiling liquid nitrogen.
Discover how a simple brain break activity, involving water balloon tosses, creatively reinforces the principles of Brønsted-Lowry acids and bases, making chemistry engaging and accessible for students.
Use the classic Lava Lamp Lab to make the concept of intermolecular forces more accessible!
