Carbon exists in different forms called allotropes. Diamond, the hardest natural substance with a high melting and boiling point, and graphite, a conductor of electricity, are two allotropes of carbon.

Iodine, despite being a non-metal, exhibits luster, which is a characteristic property of metals.

Electric wires are coated to insulate and protect against electric shock. Metals that produce a sound on striking a hard surface are termed sonorous.

Metals such as copper, aluminum, and stainless steel are commonly used for making cooking vessels because of their malleability, ductility, good heat conductivity, and high melting points.

The ability of metals to be drawn into thin wires is known as ductility, and gold is mentioned as the most ductile metal.

The first step is to collect samples of metals such as iron, copper, aluminium, magnesium, sodium, lead, zinc, and any other easily available metal.

Metals, in their pure state, exhibit a shining surface, which is referred to as metallic lustre.

The property of being beaten into thin sheets is known as malleability. Gold and silver are highlighted as the most malleable metals in the given activity.

Ethanol is commonly known as alcohol and is the active ingredient in alcoholic drinks, making it a liquid at room temperature.

Coal and petroleum contain nitrogen and sulphur, and their combustion produces oxides of sulphur and nitrogen, contributing significantly to environmental pollution.