🔍 Key Concepts

• How dry chemical extinguishers actually put out a fire (interrupting the chemical reaction and smothering) • The fire triangle: fuel, heat, oxygen • Where the fuel is located in relation to the visible flames

💭 Think About

• Think about which part of the fire you must attack to stop it from continuing to burn, not just where you see the most light or heat. • Consider where the solid or liquid material that is burning is actually located compared to the flames themselves. • Ask yourself: if I want to prevent re‑ignition, which part of the fire must be covered by the extinguishing agent?

✅ Before You Answer

• Identify where the burning fuel source is in a typical fire (not just the flames). • Confirm which extinguisher aiming point will most effectively smother the fuel and cut off the chemical reaction. • Eliminate any choice that focuses only on the visible flames and not on the fuel that is burning.