Chemistry Experiments: Polarized light iridizes crystals

Today we have made beautiful rainbow chrystals! Polarized light iridizes sodium thiosulfate crystals, so we made the crystals in between two polarizing films and then observed them through the microscope. … Continue reading Chemistry Experiments: Polarized light iridizes crystals

MEL Chemistry Box number 3: Artificial Snow and growing crystals on a Xmas tree

Our third MEL Science box arrived back in August, when we were on vacation. We have already tried two experiments from the box, both perhaps more suitable for winter. Instant … Continue reading MEL Chemistry Box number 3: Artificial Snow and growing crystals on a Xmas tree