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Question
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 |
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Solution
| Name of the material |
Appearance (Hard/Soft) |
Transparency (Transparent /Translucent/ Opaque) |
Floats/ Sinks in water |
Soluble/ Insoluble in water |
| Lump of salt | Hard | Opaque | Sinks | Soluble |
| Green grass |
Soft | Opaque | Floats | Insoluble |
| Broken glass piece |
Hard | Transparent | Sinks | Insoluble |
| Therm- ocol box |
Soft | Opaque | Floats | Insoluble |
| Pen | Hard | Opaque | Floats | Insoluble |
| Iron nail | Hard | Opaque | Sinks | Insoluble |
| Glass marbles |
Hard | Transparent | Sinks | Insoluble |
| Hair | Hard | Opaque | Floats | Insoluble |
| Naph- thalene ball |
Hard | Opaque | Floats | Insoluble |
| A piece of sugar candy |
Hard | Opaque | Sinks | Soluble |
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