Elements are the______ form of pure substances.

रिक्त स्थान भरें

Elements are the simplest form of pure substances.

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अध्याय 3: Matter Around Us - Evaluation [पृष्ठ ३८]

अध्याय 3 Matter Around Us
Evaluation | Q II. 7. | पृष्ठ ३८

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

Define: Compounds

Name: Two substances used to make jewellery.

Give reason: A frying pan is made up of steel but its handle is made up of wood.

Answer the following question:
Give the advantages of using symbols instead of names of elements or compounds.

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.
An impure substance

Select the correct answer to the statement given below:

A non-metal which exists in the liquid state.

Select the correct answer from the choice given below to complete the sentence :

Dust in air is an example of _________ mixture.

Classify the following as metals, non-metals and metalloids.

Sodium, Bismuth, Silver, Nitrogen, Silicon, Carbon, Chlorine, Iron, Copper