Learn about the fire rainbow or circumhorizontal arc. See how it works and how to distinguish it from cloud iridescence or sun dogs.
Anne Helmenstine
Get the Henderson Hasselbalch equation and examples showing how to use it to calculate the pH of weak acids or weak bases.
Henderson Hasselbalch Equation and Examples Recently updated !
Get total solar eclipse facts, including a list of upcoming total eclipses, the stages of the eclipse, and special features to see.
Total Solar Eclipse – Diamond Ring Effect, Baily’s Beads, and ... Recently updated !
Learn about the chalcogens on the periodic table. The chalcogens are group 16 or the oxygen group. These elements share common properties.
Chalcogens on the Periodic Table – Oxygen Group or Group ... Recently updated !
Get a list of things that float or sink in water. Learn how density and buoyancy determine whether a substance floats or sinks.
Things That Float or Sink in Water Recently updated !
Learn how to make a compass using simple materials. See how a homemade compass works and learn how to find North.
How to Make a Compass Recently updated !
Get the Hund's rule definition and examples in chemistry and learn how it relates to the Aufbau principle and Pauli exclusion principle.
Hund’s Rule Definition and Examples Recently updated !
Get the invasive species definition and examples. Learn about the causes and effects of invasive species in different environments.
Invasive Species Definition and Examples Recently updated !
Get the volatile definition in chemistry. See examples of volatile substances and learn about how volatility works and its uses.