Give the Name of the Radical - No3

Give the name of the radical - NO₃

One Line Answer

NO₃ – nitrate

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Chapter 4: Elements, Compounds, Symbols And Formulae - Additional Questions For Practice

Chapter 4 Elements, Compounds, Symbols And Formulae
Additional Questions For Practice | Q 20.2

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

Differentiate between the following.

Filter Paper and Alum

What is the difference between a pure substance and a mixture ?

Give three differences between metals and non-metals.

Give two examples of the following.
Elements which are liquids

State the number of atoms of H₂SO₄

Indicate whether the following statement is true or false:
A compound is made up of just one kind of atom

Indicate whether the following statement is true or false:
All elements are artificially prepared

With reference to elements – define the term ‘molecule’. Give two examples each of a monoatomic, diatomic & polyatomic molecule.

Non-metal conducting electricity :______ :: Metal conducting electricity : Copper