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Ductility is the ability of a solid material to deform under tensile stress.Most metals are good examples of ductile materials, including gold, silver, copper, erbium, terbium, and samarium. Examples of metals that are not very ductile include tungsten and high-carbon steel.

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A malleable material is one in which a thin sheet can be easily formed by hammering or rolling. Examples of malleable metals are gold, iron, aluminum, copper, silver, and lead. Gold and silver are highly malleable

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Substances which burn heating at a particular temperature called combustible substances.  Combustible solids: Wood, Paper, coal.  Combustible liquids: Petrol, diesel, ghee, alcohol.  Combustible gases  Hydrogen, Methane, Propane, Iso-butane.

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Solids that get attracted to a magnet are called magnetic materials. Example: iron. Solids that do not get attracted towards magnets are known as non – magnetic materials. Example: glass, plastic

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A material that allows electricity to pass through easily is called an electrical conductor. Example : metals. A poor electrical conductor is also called an electrical insulator. Example. Wood Plastic and rubber.

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Materials are of three types based on their states.
1 solids
2 liquids
3 gases

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Substances that allow heat to pass through them are called good conductors of heat. Example: metals. Substances that do not let heat pass through them are called bad conductors of heat. Example : wood, plastic

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Substances through which things can be seen are called transparent.’ Example. Air, water, glass. Substances through which things cannot be seen are called Opaque. Example: box, metal container Substances through which things can be particially  seen are called translucent . Example: butter paper, frosted glass

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Substance will only float if its density is less than that of the surrounding liquid will sink if its density is greater than that of the surrounding liquid. Rubidium and Caesium are denser and sink in water.Lithium, sodium, and potassium have low densities and float on water.

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Substances which completely disappear or dissolve in water liquid are called Soluble. Example: sugar, salt, etc. Substances which do not mix with water and not disappear or dissolve are called insoluble. Example : chalk powder, Sand

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A hard substance is one that cannot be scratched or cut easily.
Diamond is the hardest Substance. Substances which can be scratched or compressed easily are called soft substances. Example: Talc.

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Lustre: some materials have a shiny luster.  Example: gold, silver.
Some have no luster, and appear to be dull. Example. Sulphur, phosphorus.

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Features of characteristics of a material such as its strength, transparency, conduction, etc., are called its properties

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Materials are classified Based on Their Properties