What is the criteria for grouping the material
Answers
Explanation:
Objects around us are made up of a large variety of materials.
A given material could be used to make a large number of objects. It is also possible that an object could be made of a single material or of many different types of materials.
Different types of materials have different properties.
Some materials are shiny in appearance while others are not. Some are rough, some smooth. Similarly, some materials are hard, whereas some others are soft.
Some materials are soluble in water whereas some others are insoluble.
Some materials such as glass, are transparent and some others such as wood and metals are opaque. Some materials are translucent.
Materials are grouped together on the basis of similarities and differences in their properties.
Things are grouped together for convenience and to study their properties.
Answer:
SORTING MATERIALS INTO GROUPS
All things are made of one or more materials.
Same things can be made from different types of materials.
It may be man-made or naturally occurring.
Materials occupy space.
Materials have mass.
Materials can be classified on the basis of many criteria.
Materials can be classified on the basis of physical state; as solid, liquid and gas.
Explanation:
Science seeks to understand and explain natural phenomena. Scientists understand things by classifying them. This pertains to living creatures as well as non-living materials.
Non-living materials can be classified into groups depending on contrasting properties. If students have made lists in their Science Journals of the properties of various materials and items they have studied, they can use these lists to extend their knowledge and information about the materials they are studying.
Materials can be sorted or classified by various contrasting properties. Some examples are as follows.
metals vs non-metals
rocks vs non-rocks
visible crystals vs absence of visible crystals
natural vs artificial
denser than water or less dense than water
magnetic vs non-magnetic
state at room temperature (solid, liquid, gas)
other aspects of the composition of the article