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प्रश्न
Atoms: Fundamental particle of an element::______ : Fundamental particles of a compound.
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उत्तर
Atoms: Fundamental particle of an element:: elements: Fundamental particles of a compound.
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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 |
State four differences between compounds and mixtures.
Name: Two substances used to make jewellery.
Give reason: Graphite is used to make a lead of the pencils.
Fill in the blank
The most abundant element in the atmosphere is _______.
Fill in the blank
A liquid non-metal is _______.
The important physical properties of substances are colour, odour, nature, density & solubility in water.
Name - a poisonous gas almost as heavy as air.
Select the correct answer from A, B, C, D & E for the statement given below :
A diatomic molecule.
Give a reason for the following statement :
Brass & bronze are examples of mixtures, while copper sulphate & lead nitrate are examples of compounds.
Classify the following as metals, non-metals and metalloids.
Sodium, Bismuth, Silver, Nitrogen, Silicon, Carbon, Chlorine, Iron, Copper
