Changes in Matter
Unit 16

Learning outcomes: 

• Students should be able to differentiate chemical changes from physical changes.  

• conduct simple activities to demonstrate different types of chemical reactions.  

• state the types of reactions with examples.  

• classify given reactions under each type.  

• write balanced chemical equations using the inspection method.  

• appreciate the importance of chemical symbols, formulae and equations as a way of communication.  

• conduct simple activities to demonstrate reactions of the given metals with air, water and dilute acids.  

• compare the reactivity of given metals with air, water and dilute acids and construct the activity series for the given metals based on their reactivity.  

• state that activity series is based on the reactivity of metals.  

• determine the position of given metals in the activity series based on displacement reactions.  

• state uses of activity series.  

• accept that there is a relationship between the reactivity of the metal and its position in the activity series.  

• explain how the method of extraction of the metals is related to their positions in the activity series.  

• describe the method of extraction of iron by reduction using a blast furnace.  

• write the basic reactions involved in the extraction of iron from hematite.  

• relate the method of extraction of gold with its position in the activity series.  

• suggest a suitable extraction method for a given metal based on its position in the activity series.  

• name suitable chemicals that can be used to prepare hydrogen, oxygen and carbon dioxide gases in the school laboratory.  

• write relevant chemical reactions to prepare hydrogen, oxygen and carbon dioxide gases in the school laboratory.  

• collect samples of hydrogen, oxygen and carbon dioxide gases using a suitable apparatus.  

• state physical properties of hydrogen, oxygen and carbon dioxide gases.  

• conduct simple tests to identify hydrogen, oxygen and carbon dioxide gases.  

• list the uses of hydrogen, oxygen and carbon dioxide gases. 

Lesson Plan

Title: Reactivity of Metals and Preparation of Gases

1. Chemical Equations and Reactivity of Metals

Objective: To understand the reactivity of metals and their relationship to the activity series.

1. Introduction

   • Briefly explain the importance of chemical symbols, formulae, and equations in communicating chemical reactions.

2. Activity 1: Reactivity of Metals

   • Conduct simple activities demonstrating reactions of magnesium with hydrochloric acid, sodium with water, and iron with oxygen.

     1. Use the smart board and show some interactive videos with student-teacher discussions.
        
        

   • Discuss observations and relate them to the reactivity of metals.

3. Activity 2: Constructing an Activity Series

   • Compare the reactivity of metals with air, water, and dilute acids to construct an activity series.

   • Explain the significance of the activity series in predicting displacement reactions.

4. Conclusion

   • Discuss the uses of the activity series in predicting chemical reactions and its fundamental importance in chemistry.

Set 2: Preparation and Properties of Gases

Objective: To prepare and identify hydrogen, oxygen, and carbon dioxide gases and understand their properties and uses.

5. Introduction

   • Explain the relevance of preparing and understanding properties of hydrogen, oxygen, and carbon dioxide gases.

6. Activity 3: Preparation of Gases

   • Use suitable chemicals to prepare hydrogen, oxygen, and carbon dioxide gases in the school laboratory.

   • Discuss relevant chemical reactions for each gas and collect samples using appropriate apparatus.

7. Activity 4: Identifying Gas Properties

   • Perform simple tests to identify hydrogen, oxygen, and carbon dioxide gases based on their unique properties.

   • Discuss the uses of these gases in various applications such as fuel, life support, and carbonation of beverages.

8. Conclusion

   • Summarize the physical properties and uses of hydrogen, oxygen, and carbon dioxide gases, emphasizing their significance in practical applications.

Note: This lesson plan is designed to be interactive and engaging, incorporating hands-on activities to reinforce key concepts and foster a deeper understanding of the reactivity of metals and the preparation and properties of gases.