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Question
Write the properties of this substance.
Pen
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Solution
- A pen is a manufactured item that is composed of metals and plastic.
- It contains the ink solution, which enables us to write with it.
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Write the properties of this substance.
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Given below are the names of some objects and materials:
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Group them as:
- Round shaped and other shapes
- Eatables and non-eatables
Which among the following materials would you identify as soft materials and why?
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During summer holidays, a group of children collected a lump of salt, green grass, broken glass piece, a small thermocol box, pen, iron nail, glass marbles, hair, naphthalene ball, a piece of sugar candy (mishri) and tried to group them on the basis of properties given in table below. Help them in filling the table.
| Name of the material |
Appearance (Hard/Soft) |
Transparency (Transparent/ Translucent/ Opaque) |
Floats/ Sinks in water |
Soluble/ Insoluble in water |
Chalk, iron nail, wood, aluminium, candle, cotton usually look different from each other. Give some properties by which we can prove that these materials are different.
