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Write few examples for non-matter.

Important Questions on Some Basic Concepts of Chemistry

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Chemistry>Physical Chemistry>Some Basic Concepts of Chemistry>Nature of Matter
Which of the following represents the correct order of metallic character of the given elements?
HARD
Chemistry>Physical Chemistry>Some Basic Concepts of Chemistry>Nature of Matter
Cl- is not isoelectronic with
EASY
Chemistry>Physical Chemistry>Some Basic Concepts of Chemistry>Nature of Matter
The correct order of the metallic character of the elements Be,Al,Na,K is
MEDIUM
Chemistry>Physical Chemistry>Some Basic Concepts of Chemistry>Nature of Matter
Urea is produced by metabolism of _____. 
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Chemistry>Physical Chemistry>Some Basic Concepts of Chemistry>Nature of Matter
Which among the following elements is a metalloid?
MEDIUM
Chemistry>Physical Chemistry>Some Basic Concepts of Chemistry>Nature of Matter
A compound is formed by two elements X and Y. Atoms of element Y form hexagonal close packing (hcp) lattice and those of the elements X occupy (2/3)rd of tetrahedral voids. The formula of the compound formed by the elements X and Y is
EASY
Chemistry>Physical Chemistry>Some Basic Concepts of Chemistry>Nature of Matter
Gases have ________.
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Chemistry>Physical Chemistry>Some Basic Concepts of Chemistry>Nature of Matter
Mixture of sugar and common salt is separated by crystallisation by dissolving in
EASY
Chemistry>Physical Chemistry>Some Basic Concepts of Chemistry>Nature of Matter
_____ (Liquids/ Solids/ Gases) do not have any definite shape or size.
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Chemistry>Physical Chemistry>Some Basic Concepts of Chemistry>Nature of Matter
An element can change its state on heating.
MEDIUM
Chemistry>Physical Chemistry>Some Basic Concepts of Chemistry>Nature of Matter
How will you prepare (i) a mixture and (ii) a compound, using iron filings and sulphur. Can you just by seeing, judge that the mixture formed is a homogeneous and heterogeneous mixture?
EASY
Chemistry>Physical Chemistry>Some Basic Concepts of Chemistry>Nature of Matter
Which of the following is incorrect statement for liquid?
MEDIUM
Chemistry>Physical Chemistry>Some Basic Concepts of Chemistry>Nature of Matter
 Can you think of a solid which takes the shape of the container it is kept in? (Think of ground spices such as salt in the kitchen.) 
 
MEDIUM
Chemistry>Physical Chemistry>Some Basic Concepts of Chemistry>Nature of Matter

Give reason for the following. 

An empty tumbler lowered into a glass beaker containing water, on tilting shows bubbles of air coming out, but when not tilted, no bubbles are seen.

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Chemistry>Physical Chemistry>Some Basic Concepts of Chemistry>Nature of Matter

Matter is anything which occupies _____ (A) and has _____(B).

Identify A and B from the following.

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Chemistry>Physical Chemistry>Some Basic Concepts of Chemistry>Nature of Matter
Solids do not have a well-defined volume.
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Chemistry>Physical Chemistry>Some Basic Concepts of Chemistry>Nature of Matter
The solid like conducting state of gases with free electrons is called
EASY
Chemistry>Physical Chemistry>Some Basic Concepts of Chemistry>Nature of Matter
Liquids and gases take the shape of the vessel in which they are filled.
HARD
Chemistry>Physical Chemistry>Some Basic Concepts of Chemistry>Nature of Matter
A block of ice at -10°C slowly heated and converted to steam at 100°C. Which of the following curves represents this phenomenon qualitatively?
MEDIUM
Chemistry>Physical Chemistry>Some Basic Concepts of Chemistry>Nature of Matter

Explain the term interconversion of matter with ice as a starting material.

State the term which refers to the conversion of a substance on heating from:

a]  solid state to a liquid state.

b] liquid state to vapour state.

c] vapour state to liquid state.

d] liquid state to solid state.