SSC/SC1/ Gr10/ Chemical Reaction

SSC Board Science 1  

Grade 10 – Chemical Reactions and Equations  

Section A: Fill in the Blanks (5 × 1 = 5 marks)

1. The process in which new substances are formed by breaking and making chemical bonds is called _________________.  

   

2. In the reaction 2Mg + O₂ → 2MgO, magnesium is __________.  

 

3. The chemical formula for calcium hydroxide is __________.  

   

4. The substance that undergoes reduction in the reaction ZnO + C → Zn + CO is __________.  

   

5. The reaction in which two compounds exchange their ions to form two new compounds is called __________ reaction.  

  

Section B: Match the Column (5 × 1 = 5 marks)

Q2. Match the items in Column A with the appropriate items in Column B.

Column A | Column B                    

1. Decomposition reaction A. Na₂SO₄ + BaCl₂ → BaSO₄ + 2NaCl 

 2. Displacement reaction B. CaCO₃ → CaO + CO₂        

 3. Double displacement reaction C. Zn + H₂SO₄ → ZnSO₄ + H₂  

 4. Redox reaction D. 2Pb(NO₃)₂ → 2PbO + 4NO₂ + O₂ 

 5. Combination reaction E. CaO + H₂O → Ca(OH)₂       

Answer:  

________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

Section C: Name the Following (5 × 1 = 5 marks)

1. Name the reaction where one element replaces another in a compound.  

   ________________________________________________

2. Name the compound formed by the combination of calcium oxide and water.  

    _________________________________________________

3. Name the process to remove the oxygen from a compound.  

   _________________________________________________

4. Name the reaction represented by 2Na + 2H₂O → 2NaOH + H₂.  

    _________________________________________________

5. Name the phenomenon responsible for spoilage of food due to oxidation.  

    _________________________________________________

Section D: Balance the Chemical Equations (5 × 1 = 5 marks)

Balance the following equations:

1. _Al + O₂ → Al₂O₃_  

  ________________________________________________

2. _Mg + HCl → MgCl₂ + H₂_  

   _________________________________________________

3. _Ca(OH)₂ + H₂SO₄ → CaSO₄ + H₂O_  

   _________________________________________________

4. _Zn + NaOH → Na₂ZnO₂ + H₂_  

   _________________________________________________

5. _Fe + H₂O → Fe₃O₄ + H₂_  

   _________________________________________________

Section E: Subjective Questions

1. What is a chemical reaction? Explain with an example.  

 

2. . What is meant by oxidation and reduction? Give examples of each.  

    

3. State the difference between displacement and double displacement reactions.  

4. What is meant by precipitation reaction? Give an example.  

5. Write a short note on corrosion and its prevention.  

  

6. What do you understand by ‘rancidity’? How can it be prevented?  

7..State two differences between physical and chemical changes with examples.  

    

8. What is a redox reaction? Support your answer with examples.  

    

9. Explain with examples any two exothermic and two endothermic reactions.  

    

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Gr10/ICSE/ChemistryW.S/Organic Chemistry

Grade 10 ICSE Chemistry WorksheetTopic: Organic ChemistrySection 

1. .Explain what is meant by catenation.

2. What is a homologous series? 

3. Give examples.State any two characteristics of a homologous series.

4. Write the general formula of alkanes, alkenes, and alkynes.

5. Define structural isomerism with an example.

6. Write the IUPAC names for the following compounds:

(a) CH₃CH₂CH₃

(b) C₂H₄

(c) CH₃C≡CH

7. Give the structural formula for the following:

(a) But-1-ene

(b) Propyne

8. Give the molecular formula for a member of the alkane series containing 5 carbon atoms.

9. Write the names of the first two members of the alkyne series.

10. Write the balanced chemical equation for the complete combustion of methane.

11. What type of reaction is chlorination of methane? 

12. What happens when ethene reacts with bromine water?

13. Write an equation for the preparation of methane from sodium acetate.

14. How can unsaturated hydrocarbons be tested experimentally?

15. What is the difference between alkanes and alkenes?

16. Give two uses of methane.

17. What is meant by tetravalency of carbon

18. Draw the structural isomers of butane

19. .Identify which of the following pairs are isomers:

(a) C₄H₁₀ and C₃H₈

(b) C₂H₄ and C₂H₆

(c) CH₃CH₂CH₂CH₃ and CH₃CH(CH₃)CH₃

20. Write the difference between aliphatic and aromatic hydrocarbons with examples