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Question
Complete the statement given below by filling in the blank with the correct word.
The basic unit of an element is an __________.
Fill in the Blanks
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Solution
The basic unit of an element is an atom.
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RELATED QUESTIONS
Write true or false
All pure substances have characteristic melting and boiling points.
Match the columns.
| column A | column B |
|
1. to separate grain from chaff |
a. filtration |
| 2. to saparate sawdust from water | b. sedimentation and deeantation |
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| 4. to separate iron fillings from sand | d.sublimation |
|
5. it is used to separate sand and water |
e maganetic separation |
|
|
f .handpicking |
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misicible liquids
Why is it necessary to separate the constituents of a mixture.
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Name: A form of carbon used as a gem
Name: Two substances used to make electric wires
______ is a mixture of gases.
Complete the table:
| Element | Latin Name | Symbol |
| Mercury | ______ | Hg |
| Lead | Plumbum | ______ |
| Iron | ______ | Fe |
| Potassium | Kalium | ______ |
Reason out
Elements are called semimetals.
