Final answer:
The three correct properties of metals are ductility, malleability, and good conductivity of electricity. These characteristics make metals valuable in various applications, from construction to electronics. Understanding these properties helps in recognizing why metals behave the way they do in different environments.
Explanation:
Properties of Metals
Metals are known for several characteristic properties that distinguish them from non-metals. In this context, let's identify the correct properties from the options provided:
- Ductility: This is the ability of metals to be stretched into wires without breaking. Copper and aluminum are excellent examples of ductile metals.
- Malleability: This property allows metals to be hammered or rolled into thin sheets. Gold and silver are notably malleable, making them useful in jewelry and electronics.
- Good conductors of electricity: Metals like copper and silver are known for their high electrical conductivity, which is why they are commonly used in electrical wiring.
On the other hand, options such as dullness and poor conductors of heat do not represent typical properties of metals. In general, metals tend to be shiny (luster) and are good conductors of heat.
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