Thin Film Interference

Thin Film Interference

SKILL LEVEL Elementary School, Middle School, High School TRY IT! For all of its complexity and mystery, light is surprisingly limited in what it can actually do.  In short, light really only do two things.  It can bounce (reflection) and it can bend (refraction).  When multiple light waves are parallel to each other, they can […]

Ionic or Covalent?

Ionic or Covalent?

SKILL LEVEL Elementary, Middle School, High School TRY IT! There are many ways that elements can join together to form compounds, depending on the nature of the chemical bonds that form between them. For example, when a nonmetal (elements in the upper right of the periodic table, such as nitrogen or oxygen) combines with another […]

Sublimation and Deposition

Sublimation and Deposition

SKILL LEVEL Middle school, High School TOPICSbiologybondingcarbohydratechemistrycovalentdenaturedepositiongasesinterferenceioniclightliquidsphases of matterproteinreflectionrefractionsolidsstarchsublimationthin film interference TRY IT! Sublimation occurs when a substance passes from the solid phase directly to the gas phase without first becoming a liquid.  If you’ve ever seen dry ice, the solid form of carbon dioxide that is so fun to drop into warm water to […]