Physical Changes

ziplock bag filled with red solution and white solid being held with two hands

Don't Overreact

Format: In Person | Grade: Upper Elementary (4-5), Middle (6-8), High (9-12)

Students use their senses to detect a chemical change. Watch their eyes widen as they hold a bag that changes temperature, fills with gas, and changes color. This activity is derived from the GEMS Chemical Reactions.

This investigation requires basic familiarity with chemical changes.

Keyword(s): Physical Changes, Chemical Changes
Flour and vinegar mixture in ziplokc bag

Acid Rain

Format: In Person, Virtual | Grade: Upper Elementary (4-5), Middle (6-8)

Physical and chemical changes are compared through a simple model of acid rain. Students get excited as they create a bubbly chemical reaction. 

This investigation requires basic familiarity with physical and chemical changes.

Keyword(s): Physical Changes, Chemical Changes