https://padlet.com/1400430/se3nmkcb11685q60 Made with serendipity en-us 2021-12-28 15:36:22 UTC 2025-10-29 17:32:49 UTC hello@padlet.com 1400430 https://padlet.com/1400430/se3nmkcb11685q60/wish/1966727628 2021-12-28 15:41:30 UTC https://padlet.com/1400430/se3nmkcb11685q60/wish/1966727628 1400430 https://padlet.com/1400430/se3nmkcb11685q60/wish/1966727942  Materials are classified Based on Their Properties ]]> 2021-12-28 15:41:48 UTC https://padlet.com/1400430/se3nmkcb11685q60/wish/1966727942 1400430 https://padlet.com/1400430/se3nmkcb11685q60/wish/1966728216  Features of characteristics of a material such as its strength, transparency, conduction, etc., are called its properties ]]> 2021-12-28 15:42:05 UTC https://padlet.com/1400430/se3nmkcb11685q60/wish/1966728216 1400430 https://padlet.com/1400430/se3nmkcb11685q60/wish/1966728654 2021-12-28 15:42:30 UTC https://padlet.com/1400430/se3nmkcb11685q60/wish/1966728654 1400430 https://padlet.com/1400430/se3nmkcb11685q60/wish/1966729563  Lustre: some materials have a shiny luster.  Example: gold, silver.
 Some have no luster, and appear to be dull. Example. Sulphur, phosphorus. ]]> 2021-12-28 15:43:20 UTC https://padlet.com/1400430/se3nmkcb11685q60/wish/1966729563 1400430 https://padlet.com/1400430/se3nmkcb11685q60/wish/1966729934 2021-12-28 15:43:41 UTC https://padlet.com/1400430/se3nmkcb11685q60/wish/1966729934 1400430 https://padlet.com/1400430/se3nmkcb11685q60/wish/1966730351   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. ]]> 2021-12-28 15:44:06 UTC https://padlet.com/1400430/se3nmkcb11685q60/wish/1966730351 1400430 https://padlet.com/1400430/se3nmkcb11685q60/wish/1966730735 2021-12-28 15:44:27 UTC https://padlet.com/1400430/se3nmkcb11685q60/wish/1966730735 1400430 https://padlet.com/1400430/se3nmkcb11685q60/wish/1966731052  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 ]]> 2021-12-28 15:44:45 UTC https://padlet.com/1400430/se3nmkcb11685q60/wish/1966731052 1400430 https://padlet.com/1400430/se3nmkcb11685q60/wish/1966731430 2021-12-28 15:45:06 UTC https://padlet.com/1400430/se3nmkcb11685q60/wish/1966731430 1400430 https://padlet.com/1400430/se3nmkcb11685q60/wish/1966731680  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.]]> 2021-12-28 15:45:21 UTC https://padlet.com/1400430/se3nmkcb11685q60/wish/1966731680 1400430 https://padlet.com/1400430/se3nmkcb11685q60/wish/1966732240 2021-12-28 15:45:53 UTC https://padlet.com/1400430/se3nmkcb11685q60/wish/1966732240 1400430 https://padlet.com/1400430/se3nmkcb11685q60/wish/1966732935   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]]> 2021-12-28 15:46:37 UTC https://padlet.com/1400430/se3nmkcb11685q60/wish/1966732935 1400430 https://padlet.com/1400430/se3nmkcb11685q60/wish/1966733372 2021-12-28 15:47:02 UTC https://padlet.com/1400430/se3nmkcb11685q60/wish/1966733372 1400430 https://padlet.com/1400430/se3nmkcb11685q60/wish/1966733666  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 ]]> 2021-12-28 15:47:20 UTC https://padlet.com/1400430/se3nmkcb11685q60/wish/1966733666 1400430 https://padlet.com/1400430/se3nmkcb11685q60/wish/1966733890 2021-12-28 15:47:32 UTC https://padlet.com/1400430/se3nmkcb11685q60/wish/1966733890 1400430 https://padlet.com/1400430/se3nmkcb11685q60/wish/1966734463   Materials are of three types based on their states. 
1 solids
2 liquids
3 gases]]> 2021-12-28 15:48:05 UTC https://padlet.com/1400430/se3nmkcb11685q60/wish/1966734463 1400430 https://padlet.com/1400430/se3nmkcb11685q60/wish/1966734973 2021-12-28 15:48:35 UTC https://padlet.com/1400430/se3nmkcb11685q60/wish/1966734973 1400430 https://padlet.com/1400430/se3nmkcb11685q60/wish/1966735296  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. ]]> 2021-12-28 15:48:56 UTC https://padlet.com/1400430/se3nmkcb11685q60/wish/1966735296 1400430 https://padlet.com/1400430/se3nmkcb11685q60/wish/1966735618 2021-12-28 15:49:14 UTC https://padlet.com/1400430/se3nmkcb11685q60/wish/1966735618 1400430 https://padlet.com/1400430/se3nmkcb11685q60/wish/1966735860  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 ]]> 2021-12-28 15:49:29 UTC https://padlet.com/1400430/se3nmkcb11685q60/wish/1966735860 1400430 https://padlet.com/1400430/se3nmkcb11685q60/wish/1966736105 2021-12-28 15:49:44 UTC https://padlet.com/1400430/se3nmkcb11685q60/wish/1966736105 1400430 https://padlet.com/1400430/se3nmkcb11685q60/wish/1966738003  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.]]> 2021-12-28 15:51:43 UTC https://padlet.com/1400430/se3nmkcb11685q60/wish/1966738003 1400430 https://padlet.com/1400430/se3nmkcb11685q60/wish/1966739359 2021-12-28 15:52:58 UTC https://padlet.com/1400430/se3nmkcb11685q60/wish/1966739359 1400430 https://padlet.com/1400430/se3nmkcb11685q60/wish/1966740049 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]]> 2021-12-28 15:53:37 UTC https://padlet.com/1400430/se3nmkcb11685q60/wish/1966740049 1400430 https://padlet.com/1400430/se3nmkcb11685q60/wish/1966740180 2021-12-28 15:53:46 UTC https://padlet.com/1400430/se3nmkcb11685q60/wish/1966740180 1400430 https://padlet.com/1400430/se3nmkcb11685q60/wish/1966740564  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.]]> 2021-12-28 15:54:08 UTC https://padlet.com/1400430/se3nmkcb11685q60/wish/1966740564