Final answer:
Transition metals have several properties in common like being hard, high-melting solids that conduct heat and electricity well. Copper and gold can be alloyed in various ways, such as forming brass, bronze, 18K gold, and rose gold.
Step-by-step explanation:
The transition elements, also known as transition metals, have several properties in common. They are hard, high-melting solids that conduct heat and electricity well. They readily form alloys and lose electrons to form stable cations. Additionally, transition metals form a wide variety of stable coordination compounds.
Examples of how copper and gold can be alloyed include:
- Brass: an alloy of copper and zinc
- Bronze: an alloy of copper and tin
- 18K gold: an alloy of gold, copper, and silver
- Rose gold: an alloy of gold and copper