NCERT Class 6 Science Chapter 4: Complete Resource for Sorting Materials Into Groups
FAQs on NCERT Solutions for Class 6 Science Chapter 4 - Sorting Materials Into Groups
1. What is an object? What are its properties?
An object is a combination or collection of the matter who discovered physical and chemical properties. The basic physical properties of an object are,
Transparency
Appearance
Hard ness
Float or sinker
Solubility
2. What are the chemical properties of an object?
Along with the physical properties, every object has some typical properties. If you take an object when it changes the state of matter to another state by any reaction, then it is termed as chemical property, and the reaction is known as a chemical reaction. Some of the chemical properties of an object are,
Acidity
Reactivity
Combustion
Condensation
Flammability
Evaporation etc.
3. How do we sort different materials?
Materials are classified based on similarities and variations in their characteristics. Things are grouped together for ease of use and to better understand their characteristics. These similarities further have their own subgroups. This helps to sort them into even more similar groups, in an efficient manner. This is how we tend to sort different materials together.
4. What does the property of a material signify?
The physical characteristics of a substance describe the physical condition of material apart from its chemical or mechanical components. These characteristics include texture, density, mass, melting and boiling points, as well as electrical and thermal conductivity. Different materials can be sorted into different groups based on their varying properties, be it physical or chemical. Sorting materials is necessary and useful.
5. What does one mean by physical properties?
A physical property is the property of a material that can be viewed or quantified without affecting the substance's identity. Colour, density, hardness, and melting and boiling points are examples of physical characteristics. The physical properties of multiple materials are unique to that material and are very useful for sorting the materials into different groups. Hence knowing about any material’s physical properties can be helpful.
6. What does one mean by chemical properties?
A chemical property is a quality of a specific material that may be seen during a chemical reaction. Some of the most important chemical characteristics include flammability, toxicity, enthalpy of formation, pH value, oxidation states and chemical stability. These are very crucial as they provide information about any product's properties and can also be helpful in sorting materials based on their chemical properties.
7. Why is sorting necessary in Class 6?
Organizing things into groups allows us to organize them in a methodical manner. When things are grouped, they are easier to manage. When objects are grouped, it is much easier to get an idea about their varying properties. It is also easier to compare two items when they are grouped. Hence, sorting or grouping can be really helpful and can help in identifying similar materials based on their physical or chemical attributes.