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प्रश्न
Elements are made up of______ kinds of atoms.
उत्तर
Elements are made up of same kinds of atoms.
APPEARS IN
संबंधित प्रश्न
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 |
| 3. to separate iodine from sodium chloride | c. winnowing |
| 4. to separate iron fillings from sand | d.sublimation |
|
5. it is used to separate sand and water |
e maganetic separation |
|
|
f .handpicking |
Indicate whether the following statement is true or false:
A compound is made up of just one kind of atom
Tick (√) the correct alternative from the choice given for the following statement.
Atoms of different kinds combine to form molecules of
Tick (√) the correct alternative from the choice given for the following statement.
The compound used as common salt is
Select the correct answer from the choice given below.
A group of atoms of elements
Write the names of elements from the following symbol:
Xe
Select the correct answer from the choice in the bracket.
The least reactive metal.
Define the terms elements, compounds & mixtures with a view to show their basic difference.
Explain the term ‘mixture’.
Match the following.
| Atom | Building block of matter |
| Element | Atoms of different kinds |
| Compound | Atoms of the same kind |
| Molecule | Smallest unit of a substance |
