Background Paragraph: What does popping bubble wrap have to do with science? Actually, it demonstrates an important scientific law, called Boyle’s law. Like other laws in science, this law describes what always happens under certain conditions. Boyle’s law is one of three well-known gas laws, which state the relationships among temperature, volume, and pressure of gases. (The other two gas laws are Charles’ law and Amontons’ law.) According to Boyle’s law , if the temperature of a gas is held constant, then decreasing the volume of the gas increases its pressure—and vice versa. That’s what happens when you squeeze the bubbles of bubble wrap. You decrease the bubbles' volume, so the air pressure inside the bubbles increases until they pop. 
Story: Robert owns a propane store where he keeps containers of propane in various sizes. All the containers of propane in the store are the same temperature.  On the shelf next to him Robert has two containers, both containing the same amount of propane. One of the containers has a small volume, while the other container has a large volume.
Which container will have propane gas with higher pressure, the small volume container or the large volume container? Which container will have propane gas with lower pressure, the small volume container or the large volume container?