EASY
6th ICSE
IMPORTANT
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A molecule is the smallest particle of an element.

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Important Questions on Elements, Compounds and Mixtures

EASY
6th ICSE
IMPORTANT
Innovative Chemistry>Chapter 2 - Elements, Compounds and Mixtures>EVALUATE YOUR UNDERSTANDING>Q II
A pure substance consists of particles of only one kind.
EASY
6th ICSE
IMPORTANT
Innovative Chemistry>Chapter 2 - Elements, Compounds and Mixtures>EVALUATE YOUR UNDERSTANDING>Q II
Mercury is a non-metal.
EASY
6th ICSE
IMPORTANT
Innovative Chemistry>Chapter 2 - Elements, Compounds and Mixtures>EVALUATE YOUR UNDERSTANDING>Q II
Water is a compound made up of hydrogen and oxygen gas.
EASY
6th ICSE
IMPORTANT
Innovative Chemistry>Chapter 2 - Elements, Compounds and Mixtures>EVALUATE YOUR UNDERSTANDING>Q II
Constituents of a mixture are present in a fixed proportion.
EASY
6th ICSE
IMPORTANT
Innovative Chemistry>Chapter 2 - Elements, Compounds and Mixtures>EVALUATE YOUR UNDERSTANDING>Q II
In a homogeneous mixture, constituents are uniformly mixed throughout the mixture.
EASY
6th ICSE
IMPORTANT
Innovative Chemistry>Chapter 2 - Elements, Compounds and Mixtures>EVALUATE YOUR UNDERSTANDING>Q II
Air is a heterogeneous mixture.
EASY
6th ICSE
IMPORTANT
Innovative Chemistry>Chapter 2 - Elements, Compounds and Mixtures>EVALUATE YOUR UNDERSTANDING>Q V

Complete the following table the first one is done.

Formula of compounds Elements present in the compound
CO2 Carbon and Oxygen
CaO  
PbO  
PbS  
CuS  
FeS  

 

EASY
6th ICSE
IMPORTANT
Innovative Chemistry>Chapter 2 - Elements, Compounds and Mixtures>EVALUATE YOUR UNDERSTANDING>Q V

Complete the following table:

Compound

 Formula Number of elements Names of elements
Copper sulphate CuSO4 3 Copper, sulphur, oxygen
Zinc sulphide ZnS    
Ammonia NH3    
Sulphuric acid H2SO4    
Hydrochloric acid HCl    
Table salt NaCl