Question

‘Not all properties are shared by all metals, but all elements that share several of

these properties can be called as metals’ explain this statement in your words,

give examples if you can.​

Answer 1

For most people, metal is another word for iron, steel, or a similar hard, shiny substance.

But does this definition fit with the true properties of metals?

Yes… and no.

Before we explain, you should know that most of the elements in the periodic table are metals.

Metals are found in the center and left side of the periodic table. They can be further classified as alkali metals, alkaline earth metals, transition metals, and basic metals.

Metals Science Lesson

Properties of Metals

An element is a substance made up of one kind of atom; it cannot be separated into simpler parts. For example, the element helium (think hot-air balloons) is made up exclusively of helium atoms.

Elements are generally classified as metals or nonmetals (although some elements have characteristics of both; these are called metalloids).

Three properties of metals are:

Luster: Metals are shiny when cut, scratched, or polished.

Malleability: Metals are strong but malleable, which means that they can be easily bent or shaped. For centuries, smiths have been able to shape metal objects by heating metal and pounding it with a hammer. If they tried this with nonmetals, the material would shatter! Most metals are also ductile, which means they can be drawn out to make wire.

Conductivity: Metals are excellent conductors of electricity and heat. Because they are also ductile, they are ideal for electrical wiring. (You can test this using some household items. Keep reading to find out how!)

Additional Properties of Metals

High melting point: Most metals have high melting points and all except mercury are solid at room temperature.

Sonorous: Metals often make a ringing sound when hit.

Reactivity: Some metals will undergo a chemical change (reaction), by themselves or with other elements, and release energy. These metals are never found in a pure form, and are difficult to separate from the minerals they are found in. Potassium and sodium are the most reactive metals. They react violently with air and water; potassium will ignite on contact with water!

Other metals don’t react at all with other metals. This means they can be found in a pure form (examples are gold and platinum). Because copper is relatively inexpensive and has a low reactivity, it’s useful for making pipes and wiring.

Answer 2

The given statement is explained below-

• Every metal does not have or share the same properties, like they may have different colours, different intensity of shine, varying melting and boiling points, etc.
• But they share a particular set of properties which qualifies them or gives them the tag of metals.
• Metals are organic components of the earth's crust, where they are typically found as metal ores and are linked to numerous other elements as well as each other.
• Additionally, they exist naturally in dust from the atmosphere and in the rocks that have been washed by groundwater and surface water.
• Metal is utilized to construct a variety of objects since it is strong and long-lasting. These are employed in the production of vehicles, satellites, kitchenware, etc.
• However, some metals are not all hard. In contrast to mercury, which is a liquid metal at ambient temperature, sodium and potassium are such metals that can be cut with a knife. In nature, iron is a solid.
• All metals are effective heat and electrical conductors. Metals are used to make cooking utensils and irons because they are efficient heat conductors.
• The capacity of a substance to be stretched into a wire is known as ductility. Due to their endurance and ability to be transformed into wires, metals with this property are used in the manufacturing of cable wires and for soldering. Metals are referred to as ductile because they may be pulled into wires.
• A substance's malleability is their capacity to be beaten into flat sheets. Because they are strong and lightweight, aluminum sheets are utilized in the construction of aircraft. Other metal sheets are used to make kitchenware, the automotive industry, and other things. Metals are thus malleable.
• When struck with another hard object, metals produce a rich or ringing sound that makes them sonorous.
• Although all metals appear glossy or shiny in their natural state, this can also be achieved by polishing them.

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