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Chapters
2: Physical and Chemical Changes
▶ 3: Elements, Compounds and Mixtures
4: Atomic Structure
5: Language of Chemistry
6: Chemical Reactions
7: Hydrogen
8: Water
9: Carbon and Its Compounds
![Selina solutions for Concise Chemistry [English] Class 8 ICSE chapter 3 - Elements, Compounds and Mixtures - Shaalaa.com](/images/concise-chemistry-english-class-8-icse_6:3eba9a383eb74e06b4937fa0eadb7842.jpg "Selina solutions for Concise Chemistry [English] Class 8 ICSE chapter 3 - Elements, Compounds and Mixtures")
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Solutions for Chapter 3: Elements, Compounds and Mixtures
Below listed, you can find solutions for Chapter 3 of CISCE Selina for Concise Chemistry [English] Class 8 ICSE.
Selina solutions for Concise Chemistry [English] Class 8 ICSE 3 Elements, Compounds and Mixtures Exercise 3 (A) [Page 24]
Define: Elements
Define: Compounds
Give two examples for the following: Metals
Give Two Examples for Each of the Following: Non-metals
Give Two Examples for Each of the Following: Metalloids
Give Two Examples for Each of the Following: Inert Gases
Differentiate between:
pure and impure substances
Differentiate between:
Homogenous and heterogenous substances
Write the Chemical Name of the Following and Also Give Their Molecular Formulae:
Baking Soda
Write the Chemical Name of the Following and Also Give Their Molecular Formulae:
Vinegar
Write the Chemical Name of the Following and Also Give Their Molecular Formulae:
Marble
Write the Chemical Name of the Following and Also Give Their Molecular Formulae:
Sand
Name a soft metal.
Name: a Metal Which is brittle
Name: a non-metal which is lustrous
Name: a Liquid Metal
Name: a Metal Which is a Poor Conductor of Electricity.
Name: a Non-metal Which is a Good Conductor of Electricity.
Name: a Liquid Non-metal
Name: the Hardest Naturally Occurring Substance
Name: an Inert Gas
How is sodium chloride different from its constituent elements ?
Why is iron sulphide a compound ?
Selina solutions for Concise Chemistry [English] Class 8 ICSE 3 Elements, Compounds and Mixtures Exercise 3 (B) [Page 35]
Classify the following substances into compounds and mixtures:
Give one example for the following type of mixtures
solid-solid homogenous mixture.
Give one example for the following types of mixtures :
solid-liquid heterogenous mixture.
Give one example for the following types of mixtures :
misicible liquids
Give one example for the following types of mixtures:
liquid-gas homogenous mixture
Suggest a suitable technique to separate the constituents of the following mixtures. Also give the reason for selecting the particular method.
Salt from sea water
Suggest a suitable technique to separate the constituents of the following mixtures. Also give the reason for selecting the particular method.
Ammonium chloride from sand
Suggest a suitable technique to separate the constituents of the following mixtures. Also give the reason for selecting the particular method.
Chalk powder from water
Suggest a suitable technique to separate the constituents of the following mixtures. Also give the reason for selecting the particular method :
Iron from sulphur
Suggest a suitable technique to separate the constituents of the following mixtures. Also give the reason for selecting the particular method.
Water and alcohol
Suggest a suitable technique to separate the constituents of the following mixtures. Also give the reason for selecting the particular method.
Sodium chloride and potassium nitrate
Suggest a suitable technique to separate the constituents of the following mixtures. Also give the reason for selecting the particular method.
Calcium carbonate and sodium chloride
Define mixture.
Why is it necessary to separate the constituents of a mixture.
State four differences between compounds and mixtures.
What is chromatography? For which type of mixture is it used?
What are the advantages of chromatography?
Give two applications of chromatography.
Choose the most appropriate answer:
A mixture of sand and ammonium chloride can be separated by
filtration
distillation
sublimation
crystallisation
Choose the most appropriate answer
A pair of metalloids are
Na and Mg
B and Si
C and P
He and A
Choose the most appropriate answer
Which of the following property is not shown by compounds?
They are heterogeneous.
They are homogeneous
They have definite molecular formulae.
They have fixed melting and boiling points
Choose the most appropriate answer
A solvent of Iodine is
Water
Kerosene oil
Alcohol
Petrol
Choose the most appropriate answer
Which of the gas is highly soluble in water ?
Ammonia
Nitrogen
Carbon monoxide
Oxygen
Solutions for 3: Elements, Compounds and Mixtures
Selina solutions for Concise Chemistry [English] Class 8 ICSE chapter 3 - Elements, Compounds and Mixtures
Shaalaa.com has the CISCE Mathematics Concise Chemistry [English] Class 8 ICSE CISCE solutions in a manner that help students grasp basic concepts better and faster. The detailed, step-by-step solutions will help you understand the concepts better and clarify any confusion. Selina solutions for Mathematics Concise Chemistry [English] Class 8 ICSE CISCE 3 (Elements, Compounds and Mixtures) include all questions with answers and detailed explanations. This will clear students' doubts about questions and improve their application skills while preparing for board exams.
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Concepts covered in Concise Chemistry [English] Class 8 ICSE chapter 3 Elements, Compounds and Mixtures are Types of Mixtures, Decantation Method, Matter (Substance), Formation of Mixtures, Filtration Method, Pure Substances, Impure Substance, Separation of Mixtures, Evaporation Method, Elements, Methods of Separation, Natural substances, Handpicking Method, Centrifugation Method, Types of Element: Metals, Magnetic Separation Method, Fractional Distillation Method, Chromatography Method, Types of Element: Non-metal, Gravitation Method, Type of Element: Metalloid, Sublimation Method, Diffusion Method, Type of Elements: Noble Or Inert Gases, Solvent Extraction (Using a Separating Funnel Method), Liquefaction Method, Difference Between Metals, Non-metals, Metalloids, and Noble Gases, Compound, Crystallisation Method, Mixture, Sedimentation Method.
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