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Which properties can be studied to group materials?
Given below are some properties of the materials that can be studied to group materials together.
• Appearance: The look, feel, and texture in addition to lustre, colour and quality defines the property of the appearance of the material.
• Soluble/Insoluble: The nature of the material to completely dissolve in water is termed soluble material. Eg: Lemon juice, Sugar and Salt. Materials that don’t completely dissolve in water, form a thin film over the surface of the water termed insoluble material. Eg: Oil, Kerosene and Sawdust.
• Hardness: materials that can be compressed easily are called soft. While the materials that can’t be compressed easily are called hard. Eg: the key is hard, and cotton is soft.
• Float/Sink: The weight of the material helps to define this property. If the material is lightweight, it will float over the surface, therefore, is called floating material. Eg: Sawdust, Oil, Plastic and Wood. The material is heavyweight and it will sink in water. Eg: Stone and Metals
• Transparency/Opaque: The amount of light material allowed to pass through a material is the transparency of the material. The maximum amount of light to pass through the material, therefore, are transparent materials. Eg: Plastic, Air, and Glass.
• Translucent materials are, which only allow light to pass through them partially. Eg: Oiled paper, Coloured syrup, and some sheer materials.
• An opaque object is a material, which doesn’t allow any light to pass through them. Eg: Wood, Cardboard, and Metals.
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