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![Selina solutions for Concise Chemistry [English] Class 7 ICSE chapter 5 - Language of Chemistry - Shaalaa.com](/images/concise-chemistry-english-class-7-icse_6:c4b696cc57c1484eba21c5a1929ab504.jpg "Selina solutions for Concise Chemistry [English] Class 7 ICSE chapter 5 - Language of Chemistry")
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Solutions for Chapter 5: Language of Chemistry
Below listed, you can find solutions for Chapter 5 of CISCE Selina for Concise Chemistry [English] Class 7 ICSE.
Selina solutions for Concise Chemistry [English] Class 7 ICSE 5 Language of Chemistry Exercise
Define chemical reaction.
What is a chemical equation?
Why do we need to balance chemical equations?
State four conditions necessary for chemical reactions to take place.
Differentiate between in Reactants and products?
Differentiate between in Chemical reaction and chemical equation.
Differentiate between:
A balanced and a skeletal chemical equation.
Write word equation for the following skeletal equation:
\[\ce{KClO3 -> KCl + O2}\]
Write word equation for the following skeletal equation:
\[\ce{Zn + HCl -> ZnCl2 + H2}\]
Write word equation for the following skeletal equation:
\[\ce{FeCl2 + Cl2 -> FeCl3}\]
Write word equation for the following skeletal equation:
\[\ce{CO + O2 -> CO2}\]
Write word equation for the following skeletal equation:
\[\ce{Ca + O2 → CaO}\]
Write word equation for the following skeletal equation:
\[\ce{Na + O2 -> Na2O}\]
Write word equation for the following skeletal equation:
\[\ce{NaOH + H2SO4 -> Na2SO4 + H2O}\]
Write word equation for the following skeletal equation:
\[\ce{AgBr -> Ag + Br2}\]
Write word equation for the following skeletal equation:
\[\ce{KNO3 -> KNO2 + O2}\]
Balance the following chemical equation :
FeS + HCl → FeCl2 + H2S
Balance the following chemical equation :
Na2CO3 + HCl → NaCI + H2O + CO2
Balance the following chemical equation :
H2 + O2 → H2O
Balance the following chemical equation :
Na20 + H20 → NaOH
What information do you get from the equation H2+ Cl2 → 2HCl ?
Write your observation for the following chemical reaction and name the product formed:
When sugar is heated.
Write your observation for the following chemical reaction and name the product formed :
When manganese dioxide is added to potassium chlorate and heated.
Write your observation for the following chemical reaction and name the product formed :
When dilute acetic acid is poured on baking soda.
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.
Write your observation for the following chemical reaction and name the product formed :
When ammonium chloride is heated with sodium hydroxide.
Write your observation for the following chemical reaction and name the product formed :
When water is added to quick lime?
Write symbolic representation for the following word equation and balance them :
Calcium carbonate → Calcium oxide + Carbon dioxide.
Write symbolic representation for the following word equation and balance them :
Carbon + Oxygen → Carbon dioxide.
Write symbolic representation for the following word equation and balance them :
Calcium oxide + Water → Calcium hydroxide
Write symbolic representation for the following word equation and balance them :
Aluminium + Chlorine → Aluminium chloride.
Write symbolic representation for the following word equation and balance them :
Iron + Sulphur → Iron sulphide.
Selina solutions for Concise Chemistry [English] Class 7 ICSE 5 Language of Chemistry Objective type questions
Fill in the blank:
The substances which undergo chemical change are called _______
Fill in the blank:
The substances formed as a result of a chemical reaction are called _______
Fill in the blank:
During a chemical reaction transfer of ________ takes place.
Fill in the blank:
The basic conditions necessary for a chemical reaction is _______
Fill in the blank:
In some chemical reactions an insoluble ________ is formed when two solutions are mixed.
Write true or false :
No new substance is formed during a chemical reaction.
True
False
Write true or false :
Hydrogen sulphide has rotten egg smell .
True
False
Write true or false :
When potassium iodide solution is added to lead acetate solution a red precipitate is formed.
True
False
Write true or false .
A black residue is formed when sugar is heated .
True
False
Write true or false :
When iron and sulphur are heated together a grey mass is formed which is attracted by a magnet .
True
False
Write true or false.
A chemical equation gives only qualitative information of a chemical reaction.
True
False
Selina solutions for Concise Chemistry [English] Class 7 ICSE 5 Language of Chemistry Multiple choice questions
A chemical equation is a statement that describes a chemical change in terms of
symbols and formulae
energy
number of atoms
colours
Balancing a chemical equation is based on
Law of conservation of mass
Mass of reactants and products
Symbols and formulae
None of the above
Copper carbonate when heated, it turns :
Blue
Green
Black
Yellow
Selina solutions for Concise Chemistry [English] Class 7 ICSE 5 Language of Chemistry Additional questions
Define chemical reaction.
What is a chemical equation?
Why do we need to balance chemical equations?
State four conditions necessary for a chemical reaction to take place.
Write balanced chemical equations for the reactions represented by word equations in the conditions for chemical reaction.
Balance the following equation :
Fe + O2 → Fe3 O4
Balance the following equation :
Fe + H2O → Fe3O4 + H2
Balance the following equation .
N2 + O2 → NO
Balance the following equation :
Pb3O4 → PbO + O2
Balance the following equation. Also name the product formed.
`"NaNO"_3 → "NaNO"_2 + "O"_2` Name of product (s)
Balance the following equation Also name the product formed.
`"K" + "CI"_2 → "KCI"`
Balance the following equation. Also name the products formed.
\[\ce{Ag + S -> Ag2S}\]
Balance the following equation. Also name the products formed.
`"Mg" + "O"_2 → "MgO"`
Balance the following equation. Also name the product formed.
`"KCIO"_3 → "KCI" +"O"_2`
Balance the following equation. Also name the product formed.
` "H"_2"O"_2 → "H" _2 "O" + "O"_2`
Balance the following equation. Also name the product formed.
`"H"_2 +"CI"_2 → "HCI"`
Balance the following equation. Also name the product formed.
`"Na"+ "H"_2 "O" → "NaOH"+ "H"_2`
Balance the following equation. Also name the product formed.
`"CO" + "O"_2 → " CO"_2`
Balance the following equation. Also name the product formed.
`"Zn" + "HCI" → "ZnCI" _2 + "H"_2`
Balance the following equation. Also name the product formed.
K2O + H2O → KOH
Balance the following equation. Also name the product formed.
CO2 + C → CO
Balance the following equation. Also name the product formed.
N2 + H2 → NH3
Balance the following equation. Also name the product formed.
PbCO3 → PbO +CO2
Balance the following equation. Also name the product formed.
FeCI2 + CI2 → FeCI3
State what you would observe when the following substance is heated in a glass test tube red lead.
State what you would observe when the following substance is heated in a glass test tube Copper (II) carbonate Red lead .
Explain the following reaction with one suitable example of Combination reactions .
Explain the following reaction with one suitable example of Decomposition reaction
Explain the following reaction with one suitable example of Displacement reaction.
Explain the following reaction with one suitable example of Double decomposition reaction.
Name the type of chemical reaction shown by the following equation:
CaCO3 → CaO + CO2
Name the type of chemical reaction shown by the following equation:
2Mg + O2 → 2MgO
Name the type of chemical reaction shown by the following equation:
Fe + CuSO4 → FeSO4 + Cu
Name the type of chemical reaction shown by the following equation:
NaOH + HCl → NaCl + H2O
Name the type of chemical reaction shown by the following equation :
Fe2O3 + 2Al → Al2O3 + 2Fe
Write your observation and name the product when zinc reacts with dilute hydrochloric acid.
Write your observation and name the product when ron nails are added to an aqueous solution of copper sulphate.
Write your observation and name the product when An aqueous solution of barium chloride is added to dilute sulphuric acid.
A solution of a substance ‘X’ is used for white washing Name the substance ‘X’ and write its formula.
A solution of a substance ‘X’ is used for white washing write the reaction of the substance ‘X’ named in (a) above with water.
Solutions for 5: Language of Chemistry
Selina solutions for Concise Chemistry [English] Class 7 ICSE chapter 5 - Language of Chemistry
Shaalaa.com has the CISCE Mathematics Concise Chemistry [English] Class 7 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 7 ICSE CISCE 5 (Language of Chemistry) 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.
Further, we at Shaalaa.com provide such solutions so students can prepare for written exams. Selina textbook solutions can be a core help for self-study and provide excellent self-help guidance for students.
Concepts covered in Concise Chemistry [English] Class 7 ICSE chapter 5 Language of Chemistry are Chemical Equations, Chemical Reaction, Conditions Necessary for Chemical Reactions, Indicators of a Chemical Change (Chemical Reaction), Balancing Chemical Equation.
Using Selina Concise Chemistry [English] Class 7 ICSE solutions Language of Chemistry exercise by students is an easy way to prepare for the exams, as they involve solutions arranged chapter-wise and also page-wise. The questions involved in Selina Solutions are essential questions that can be asked in the final exam. Maximum CISCE Concise Chemistry [English] Class 7 ICSE students prefer Selina Textbook Solutions to score more in exams.
Get the free view of Chapter 5, Language of Chemistry Concise Chemistry [English] Class 7 ICSE additional questions for Mathematics Concise Chemistry [English] Class 7 ICSE CISCE, and you can use Shaalaa.com to keep it handy for your exam preparation.
