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Selina solutions for Concise Chemistry Class 7 ICSE chapter 5 - Language of Chemistry [Latest edition]

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Concise Chemistry Class 7 ICSE - Shaalaa.com

Chapter 5: Language of Chemistry

ExerciseObjective type questionsMultiple choice questionsAdditional questions

Selina solutions for Concise Chemistry Class 7 ICSE Chapter 5 Language of Chemistry Exercise

Exercise | Q 1.1

Define chemical reaction.

Exercise | Q 1.2

What is a chemical equation?

Exercise | Q 1.3

Why do we need to balance chemical equations?

Exercise | Q 2

State four conditions necessary for chemical reactions to take place.

Exercise | Q 3.1

Differentiate between in Reactants and products?

Exercise | Q 3.2

Differentiate between in Chemical reaction and chemical equation.

Exercise | Q 3.3

Differentiate between in A balanced and a skeletal chemical equation.

Exercise | Q 4.1

Write word equation for the following skeletal equation:

KClO3 →  KCl + O2

Exercise | Q 4.2

Write word equation for the following skeletal equation:

Zn + HCl → ZnCl2 + H2

Exercise | Q 4.3

Write word equation for the following skeletal equation:

FeCl2 + Cl2 → FeCl3

Exercise | Q 4.4

Write word equation for the following skeletal equation:

CO + O2 → CO2

Exercise | Q 4.5

Write word equation for the following skeletal equation:

Ca + O2 → CaO

Exercise | Q 4.6

Write word equation for the following skeletal equation:

Na + O2 →  Na2O

Exercise | Q 4.7

Write word equation for the following skeletal equation:

NaOH + H2SO4 → Na2SO4 + H2O

Exercise | Q 4.8

Write word equation for the following skeletal equation:

AgBr →  Ag + Br2

Exercise | Q 4.9

Write word equation for the following skeletal equation:

KNO3 →   KNO2 + O2

Exercise | Q 5.1

Balance the following chemical equation :

FeS + HCl →  FeCl2 + H2S

Exercise | Q 5.2

Balance the following chemical equation :

Na2CO3 + HCl  →  NaCI + H2O + CO2

Exercise | Q 5.3

Balance the following chemical equation :

H2 + O2   →  H2O

Exercise | Q 5.4

Balance the following chemical equation :

Na20 + H20  →  NaOH

Exercise | Q 6

What information do you get from the equation H2+ Cl2  →  2HCl ?

Exercise | Q 7.1

Write your observation for the following chemical reaction and name the product formed :

When sugar is heated.

Exercise | Q 7.2

Write your observation for the following chemical reaction and name the product formed :

When manganese dioxide is added to potassium chlorate and heated.

Exercise | Q 7.3

Write your observation for the following chemical reaction and name the product formed :

When dilute acetic acid is poured on baking soda.

Exercise | Q 7.4

Write your observation for the following chemical reaction and name the product formed :

When an aqueous solution of sodium chloride is mixed with an aqueous solution of silver nitrate.

Exercise | Q 7.5

Write your observation for the following chemical reaction and name the product formed :
When ammonium chloride is heated with sodium hydroxide.

Exercise | Q 7.6

Write your observation for the following chemical reaction and name the product formed :

When water is added to quick lime?

Exercise | Q 8.1

Write symbolic representation for the following word equation and balance them :

Calcium carbonate → Calcium oxide + Carbon dioxide.

Exercise | Q 8.2

Write symbolic representation for the following word equation and balance them :

 Carbon + Oxygen → Carbon dioxide.

Exercise | Q 8.3

Write symbolic representation for the following word equation and balance them :

Calcium oxide + Water → Calcium hydroxide

Exercise | Q 8.4

Write symbolic representation for the following word equation and balance them :

Aluminium + Chlorine → Aluminium chloride.

Exercise | Q 8.5

Write symbolic representation for the following word equation and balance them :

Iron + Sulphur → Iron sulphide.

Selina solutions for Concise Chemistry Class 7 ICSE Chapter 5 Language of Chemistry Exercise Objective type questions

Objective type questions | Q 1.1

Fill in the blank:
The substances which undergo chemical change are called _______

Objective type questions | Q 1.2

Fill in the blank:
The substances formed as a result of a chemical reaction are called _______

Objective type questions | Q 1.3

Fill in the blank:

During a chemical reaction transfer of ________ takes place.

Objective type questions | Q 1.4

Fill in the blank:

The basic conditions necessary for a chemical reaction is _______

Objective type questions | Q 1.5

Fill in the blank:

In some chemical reactions an insoluble ________ is formed when two solutions are mixed.

Objective type questions | Q 2.1

Write true or false  :
No new substance is formed during a chemical reaction.

  • True

  • False

Objective type questions | Q 2.2

Write true or false  : 

Hydrogen sulphide has rotten egg smell .

  • True

  • False

Objective type questions | Q 2.3

Write true or false :

When potassium iodide solution is added to lead acetate solution a red precipitate is formed.

  • True

  • False

Objective type questions | Q 2.4

Write true or false .
A black residue is formed when sugar is heated .

  • True

  • False

Objective type questions | Q 2.5

Write true or false :

When iron and sulphur are heated together a grey mass is formed which is attracted by a magnet .

  • True

  • False

Objective type questions | Q 2.6

Write true or false.

A chemical equation gives only qualitative information of a chemical reaction.

  • True

  • False

Selina solutions for Concise Chemistry Class 7 ICSE Chapter 5 Language of Chemistry Exercise Multiple choice questions

Multiple choice questions | Q 1

A chemical equation is a statement that describes a chemical change in terms of

  • symbols and formulae

  • energy

  • number of atoms

  • colours

Multiple choice questions | Q 2

Balancing a chemical equation is based on

  • Law of conservation of mass

  • Mass of reactants and products

  • Symbols and formulae

  • None of the above

Multiple choice questions | Q 3

Copper carbonate when heated, it turns :

  • Blue

  • Green

  • Black

  • Yellow

Selina solutions for Concise Chemistry Class 7 ICSE Chapter 5 Language of Chemistry Exercise Additional questions

Additional questions | Q 1.1

Define chemical reaction.

Additional questions | Q 1.2

What is a chemical equation?

Additional questions | Q 1.3

Why do we need to balance chemical equations?

Additional questions | Q 2

State four conditions necessary for a chemical reaction to take place.

Additional questions | Q 3

Write balanced chemical equations for the reactions represented by word equations in the conditions for chemical reaction.

Additional questions | Q 4.1

Balance the following equation :

 Fe + O2 → Fe3 O4

Additional questions | Q 4.2

Balance the following equation :

Fe + H2O → Fe3O4 + H2

Additional questions | Q 4.3

Balance the following equation .

N2 + O2 → NO

Additional questions | Q 4.4

Balance the following equation :

Pb3O4 → PbO + O2

Additional questions | Q 5.01

Balance the following equation. Also name the product formed. 

`"NaNO"_3  → "NaNO"_2  + "O"_2`  Name of product (s)

Additional questions | Q 5.02

Balance the following equation Also name the product formed.

`"K" + "CI"_2 → "KCI"`

Additional questions | Q 5.03

Balance the following equation. Also name the products formed. 

`"Ag" + "S"   → " Ag"_2 "S"`

Additional questions | Q 5.04

Balance the following equation. Also name the products formed. 

`"Mg" + "O"_2  →  "MgO"`

Additional questions | Q 5.05

Balance the following equation. Also name the product formed. 

`"KCIO"_3 →  "KCI" +"O"_2`

Additional questions | Q 5.06

Balance the following equation. Also name the product formed. 

` "H"_2"O"_2    →  "H" _2 "O" + "O"_2` 

Additional questions | Q 5.07

Balance the following equation. Also name the product formed. 

 `"H"_2 +"CI"_2  →  "HCI"`

Additional questions | Q 5.08

Balance the following equation. Also name the product formed. 

`"Na"+ "H"_2 "O" → "NaOH"+ "H"_2`

Additional questions | Q 5.09

Balance the following equation. Also name the product formed. 

`"CO" + "O"_2  → " CO"_2`

Additional questions | Q 5.1

Balance the following equation. Also name the product formed. 

`"Zn" + "HCI" →  "ZnCI" _2 + "H"_2`

Additional questions | Q 5.11

Balance the following equation. Also name the product formed.  

K2O + H2O    → KOH 

Additional questions | Q 5.12

Balance the following equation. Also name the product formed. 

CO2 + C →  CO

Additional questions | Q 5.13

Balance the following equation. Also name the product formed.

N2 + H2   →  NH

Additional questions | Q 5.14

Balance the following equation. Also name the product formed.

PbCO3    →   PbO +CO2

Additional questions | Q 5.15

Balance the following equation. Also name the product formed. 

FeCI2 + CI2 →  FeCI3

Additional questions | Q 6.1

State what you would observe when the following substance is heated in a glass test tube red lead.

Additional questions | Q 6.2

State what you would observe when the following substance is heated in a glass test tube Copper (II) carbonate Red lead .

Additional questions | Q 7.1

Explain the following reaction with one suitable example of Combination reactions .

Additional questions | Q 7.2

Explain the following reaction with one suitable example of Decomposition reaction

Additional questions | Q 7.3

Explain the following reaction with one suitable example of Displacement reaction.

Additional questions | Q 7.4

Explain the following reaction with one suitable example of Double decomposition reaction.

Additional questions | Q 8.1

Name the type of chemical reaction shown by the following equation:

CaCO3 → CaO + CO2

Additional questions | Q 8.2

Name the type of chemical reaction shown by the following equation:

2Mg + O2 → 2MgO

Additional questions | Q 8.3

Name the type of chemical reaction shown by the following equation:

Fe + CuSO4 → FeSO4 + Cu

Additional questions | Q 8.4

Name the type of chemical reaction shown by the following equation:

NaOH + HCl → NaCl + H2O

Additional questions | Q 8.5

Name the type of chemical reaction shown by the following equation :

Fe2O3 + 2Al → Al2O3 + 2Fe

Additional questions | Q 9.1

Write your observation and name the product when zinc reacts with dilute hydrochloric acid.

Additional questions | Q 9.2

Write your observation and name the product when ron nails are added to an aqueous solution of copper sulphate.

Additional questions | Q 9.3

Write your observation and name the product when An aqueous solution of barium chloride is added to dilute sulphuric acid.

Additional questions | Q 10.1

A solution of a substance ‘X’ is used for white washing Name the substance ‘X’ and write its formula.

Additional questions | Q 10.2

A solution of a substance ‘X’ is used for white washing write the reaction of the substance ‘X’ named in (a) above with water.

Chapter 5: Language of Chemistry

ExerciseObjective type questionsMultiple choice questionsAdditional questions
Concise Chemistry Class 7 ICSE - Shaalaa.com

Selina solutions for Concise Chemistry Class 7 ICSE chapter 5 - Language of Chemistry

Selina solutions for Concise Chemistry Class 7 ICSE chapter 5 (Language of Chemistry) include all questions with solution and detail explanation. This will clear students doubts about any question and improve application skills while preparing for board exams. The detailed, step-by-step solutions will help you understand the concepts better and clear your confusions, if any. Shaalaa.com has the CISCE Concise Chemistry Class 7 ICSE solutions in a manner that help students grasp basic concepts better and faster.

Further, we at Shaalaa.com provide such solutions so that students can prepare for written exams. Selina textbook solutions can be a core help for self-study and acts as a perfect self-help guidance for students.

Concepts covered in Concise Chemistry Class 7 ICSE chapter 5 Language of Chemistry are Concept of Chemical Reactions, Characteristics of Occurrence of a Chemical Reaction, Chemical Equations - Word Equations for Chemical Reactions, Chemical Equations - Emphasize on the Observational Skills and the Names of Products Formed, Chemical Equations - Some Examples of Word Equations for Practice., Concept of Language of Chemistry.

Using Selina Class 7 solutions Language of Chemistry exercise by students are an easy way to prepare for the exams, as they involve solutions arranged chapter-wise also page wise. The questions involved in Selina Solutions are important questions that can be asked in the final exam. Maximum students of CISCE Class 7 prefer Selina Textbook Solutions to score more in exam.

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