🔍 Key Concepts

• Ideal Gas Law relationship between pressure (P), volume (V), and temperature (T) for a fixed amount of gas • How pressure and volume are related when temperature is constant (Boyle’s Law) • How volume and temperature are related when pressure is constant (Charles’s Law)

💭 Think About

• If you squeeze a gas (increase pressure) while keeping temperature the same, what happens to its volume? Is that a direct or inverse relationship? • If you heat a gas (increase temperature) at constant pressure, what happens to its volume? Is that a direct or inverse relationship? • Combine your answers about P–V and V–T behavior: which choice matches BOTH relationships at the same time?

✅ Before You Answer

• Identify which choices show volume inversely proportional to pressure and which show it directly proportional to pressure • Identify which choices show volume directly proportional to temperature and which show it inversely proportional to temperature • Match the option that agrees with both Boyle’s Law and Charles’s Law for a fixed mass of gas