Test: Materials: Metals & Non-Metals- 1 - UPSC MCQ

Those elements that show the property of both metal and non-metal both are called metalloid or semi metals. Silicon, germanium etc are common metalloid.

Ionic compounds typically form when electrons move from metals to non-metals, creating a bond. It's like passing a toy from one friend to another. The metal gives away its electron to the non-metal, making them stick together just like how friends share and play together.

Metals like sodium and potassium are soft and can be cut with a knife.

Formation of rust on metal surface like iron is also called as corrosion. Corrosion occurs in presence of water and oxygen.

Metals are usually shiny or lustrous. This means they reflect light and look bright. Metals can also conduct electricity well, which means they allow electricity to flow through them easily.

• Explanation: Ionic compounds actually form by the transfer of electrons from metals to non-metals. This means that metals give away electrons to non-metals. It's like sharing toys – metals are generous and give their electrons to non-metals! So, the statement "Ionic compounds form by the sharing of electrons between metals and non-metals" is False.
• Additional Fact: When metals give away electrons to non-metals, they become positively charged ions (cations), and the non-metals that receive the electrons become negatively charged ions (anions). These oppositely charged ions then stick together to form ionic compounds.

Malleability is a physical property of metals that defines their ability to be hammered, pressed, or rolled into thin sheets without breaking. In other words, it is the property of a metal to deform under compression and take on a new shape.

Metal is characterised by high electrical conductivity. Metals are malleable, ductile, sonorous and good conductor of heat and electricity.

Gold is metal and Silicon is a metalloid. Those elements that shows the property of both metal and non-metal are called metalloids.

• Metals are indeed good conductors of heat and electricity. This means that metals can easily allow heat and electricity to flow through them.
• For example, when you touch a metal object that has been sitting in the sun, it feels hot because metals can quickly absorb and transfer heat.
• Similarly, when you turn on a light switch, the electricity flows through metal wires to power the light bulb.

Non-metals are found in nature in solid, liquid and gaseous state. On the other hand metals are found in solid state except mercury that is liquid at room temperature.

Non-metal are generally bad conductors of electricity but Graphite is an allotrope of carbon which is a good conductor of electricity.

Out of these only Carbon (C) is a non-metal whereas the others are all metals.

All metals are found in solid state at normal room temperature except mercury, which is liquid at room temperature.

Metals produce sound when struck because they are sonorous. This means they can make noise when hit. It's like when you tap a bell and it rings. Metals do the same thing because they are sonorous.