N O T E B O O K
T H E C O M P O S I T I O N O F M AT T E R
Atoms and Elements OBSERVING PHENOMENA
1. Record the mass of the balloons before and after you inflated them. Then, determine the mass of the air in each balloon. Balloon
Mass of Balloon Before (g)
# of Breaths
A
2
B
3
C
4
D
5
Mass of Balloon After (g)
Mass of Air in Balloon (g)
Phenomenon: Balloons have more mass when filled with air, despite air being invisible to the eye.
2. What questions do you have about this phenomenon?
Š Teachers’ Curriculum Institute
Atoms and Elements
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