Tag Archives: chemistry

Dissolving Styrofoam

Dissolving Styrofoam

SKILL LEVEL K-6, Middle school, High School TRY IT! Polystyrene is a polymer that can be processed with air bubbles to produce Styrofoam, that amazingly light weight material that keeps the contents of our packages safe in the mail and our coffee warm in the winter. A polymer is long, chain-like, molecule composed of the […]

Traffic Light Reaction

Traffic Light Reaction

SKILL LEVEL Middle school, High School TRY IT! Electrochemical reactions are those that involve the transfer of electrons from one compound or species to another. In an electrochemical reaction, the species that loses one or more electrons is said to have been oxidized.  The species that gains one or more electrons is said to have […]

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 […]