Question

what a gas lab exit ticket
possible points: 1.11
demo #5: when the volume of the syringe was decreased, the balloon
$\boldsymbol{✓}$ because the pressure within the syringe
shrunk
expanded
remained the same

Explanation:

This relates to Boyle's Law, which states that for a fixed amount of gas at constant temperature, pressure and volume are inversely proportional ($P_1V_1 = P_2V_2$). When the syringe volume decreases, the pressure inside the syringe increases. The balloon, which has lower internal pressure, is compressed by this higher external pressure, causing it to shrink.

Answer:

shrunk, because the pressure within the syringe increased