🔍 Key Concepts

• Behavior of gases when cooled (basic gas laws) • How refrigeration affects volume and density of a gas • Why liquefied gas carriers use very low temperatures for cargo

💭 Think About

• Think about what happens to the spacing between gas molecules when temperature decreases. • Consider how cooling a gas changes the amount of product you can fit into a given tank size. • Ask yourself: does refrigeration generally make a gas take up more space or less space for the same amount of product?

✅ Before You Answer

• Recall that for gases, at lower temperature (with pressure controlled), the volume tends to decrease rather than increase. • Check which choice describes a condition that would make transport more efficient for ship operators. • Eliminate any option that would make transport less economical (e.g., needing larger tanks for the same amount of cargo).