Composition: Compose a character sketch using direct exposition.
The glass is removed (without tipping) and the paper towel is dry.
The paper is replaced in the glass and submerged.
The paper towel is saturated.
Conclusion: The paper towel remained dry during submersion because there was air taking up space in the glass between the water and the paper towel.
Chemistry Experiment 1.1: Air Has Mass
then tied to a yardstick.
Deflated balloons have equal mass and, therefore,
Conclusion: Air has mass. Mass is made up of matter and one way the amount of matter a substance has may be measured is by its weight. The weight of a substance is influenced by the gravitational pull placed on it.