Classification of materials on the basis of its properties

Materials Required 

  • a glass container with water 
  • spoon/glass rod 
  • a sheet of white paper

and some everyday materials around you such, as

  • Wax  
  • glass piece (with blunt edges) 
  • oil coated paper 
  • sugar crystals 
  • green leaf 
  • piece of coal 
  • piece of wood 
  • a coin 
  • a piece of sponge, etc. 

 

Real Lab Procedure 

Check the compressibility of the material:

  • Take the given materials one by one. Apply some pressure on it. Check its compressibility. 
  • Classify the material as hard or soft and record your observations 
  • Repeat the same steps with other materials. 

Check if the material floats/sinks in water and its solubility:

  • Take a container and fill it half with water.  
  • Add any given material and see whether it floats or sinks.  
  • Now, stir it with a spoon or glass rod and check if it is soluble or insoluble.  
  • Repeat the same steps with other materials. 
  • Record your observations. 

Check for transparency: 

  • Take a strip of white paper and make a dark spot on it.  
  • Place the given materials one by one on the spot and observe their visibility, whether you can see it clearly, not clearly, or not able to see it at all. 
  • Record your observations.

 

Simulation Procedure 

  • Check compressibility 
  • Check if the material floats/sinks in water 
  • Check solubility
  • Check for transparency

Observations 

Material 

                                                               Properties 

Hard/Soft 

Soluble/Insoluble 

in water 

Sinks/Floats 

in water 

Transparency 

(transparent/translucent/opaque) 

Wax 

 

 

 

 

Glass piece 

 

 

 

 

Oil coated paper 

 

 

 

 

Sugar crystals 

 

 

 

 

Green leaf 

 

 

 

 

Coal 

 

 

 

 

Wood 

 

 

 

 

Coin 

 

 

 

 

Piece of sponge 

 

 

 

 

 

Conclusions 

  • Soft materials, such as wax, green leaf, sponge, etc., are easy to press. Materials that were difficult to press were hard, such as glass pieces, sugar crystals, coin, coal, and wood.  
  • Materials that dissolve in water are called soluble materials, such as sugar crystals. Materials that do not dissolve in water after stirring for a long are called insoluble materials, such as wax, glass pieces, coin, coal, wood, green leaf, sponge, etc.  
  • Some materials float in water, such as wax, wood, and coal. Some materials, like sugar crystals, sink to the bottom of water and settle there. Other materials that sink in water include coin, glass pieces, and so on.  
  • Materials through which you can see clearly are transparent, such as glass pieces. Materials through which you cannot see clearly are translucent, such as oil-coated paper. Materials through which you cannot see at all are opaque, such as coal, wood, sugar crystals, wax, coin, and sponge.  

We conclude that materials are classified on the basis of their properties.