🔍 Key Concepts

• Alloys are mixtures of two or more metals to improve properties like strength and corrosion resistance • Common uses and composition of brass (musical instruments, fittings, valves) • Difference between bronze and brass in basic metallurgy

💭 Think About

• Think about which metal gives brass its yellowish, gold-like color and good corrosion resistance in marine environments • Recall which alloy (from the choices) is commonly used for ships’ propellers and bearings, and which name that alloy is known by • Match each metal pair with the common alloy name you’ve heard: which pair is called bronze and which is called brass?

✅ Before You Answer

• Be sure you can associate brass with its typical color and use (e.g., door handles, fittings, marine valves) • Verify which combination of metals is known as bronze so you don’t confuse it with brass • Eliminate any metal pairs that are not commonly known alloys used in maritime hardware (like propellers, valves, and pipe fittings)