Spark Notes
Review of Chemical Bonding: Review Test
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...
Curated OER
Does Size Matter?
Middle schoolers explore chemical solutions. For this chemistry lesson, students investigate the relationship between three related experiments about solutions. Middle schoolers determine variables that affect the chemical concentration...
Other
Solubility of Things: Factors Affecting Solubility
Find out how temperature, polarity, pressure, molecular size, and stirring affects the speed of dissolving.