Matter Defined
This video presents the same text shown beside it, spoken and on screen. It adds nothing the text does not say.
State
Matter is anything that occupies space and has mass.
Show
Air fits this definition: it inflates a balloon, taking up space, and has measurable mass even though it cannot be seen.
Watch for
Because gases are invisible, students often exclude them from "matter" by instinct; an inflated balloon versus a deflated one visibly shows gas occupies space.
Builds on
- Nothing — this is a starting point.