Quiz on Alloys

What is an alloy?

• A solid mineral

• A type of gas

• A mixture of elements

• A pure metal

How are alloys formed?

• By mixing molten metals together

• By cooling metals in air

• By mixing solid metals

• By heating metals separately

What is a common result of alloying metals?

• Weaker metals

• More brittle metals

• Stronger and harder metals

• Less corrosion resistant metals

What happens to metals when they are alloyed?

• They become lighter

• They turn into gases

• They gain useful properties

• They lose their properties

What is the process of allowing molten metals to cool called?

• Solidification

• Evaporation

• Condensation

• Sublimation

What is the main purpose of creating an alloy?

• To create a decorative item

• To enhance specific properties for a purpose

• To reduce the cost of materials

• To make metals easier to recycle

What is the name of the alloy composed of approximately 70% copper and 30% zinc?

• Bronze

• Brass

• Solder

• Mild Steel

What is the purpose of using mild steel as an alloy?

• Bells

• Musical Instruments

• Machine Parts

• Car Bodies

Why is stainless steel commonly used in cutlery?

• It is lightweight and cheap

• It is hard and durable

• It is a good conductor of electricity

• It is easy to melt

What is the typical composition of a solder alloy?

• 70% Copper 30% Zinc

• 90% Copper 10% Tin

• 50% Tin 50% Lead

• 74% Iron 18% Chromium 8% Nickel