<human>: How can I tell the difference between real gold and fake gold?
<bot>: Real gold is a yellow metal that is soft, malleable, and ductile. It has a distinctive golden color and is usually alloyed with other metals such as silver or copper to increase its strength. Fake gold is often made from an alloy of zinc and copper and may have a greenish-yellow hue. Additionally, it will likely be much harder than real gold and may contain other materials such as lead, nickel, or aluminum.