In this chapter, we will learn about the Periodic Table of Elements. We will study the historical development of the table and understand the basic principles behind the arrangement of elements. We will also explore the modern Periodic Table and learn how the position of elements relates to their proton number.
Next, we will focus on Group 18 elements, also known as the noble gases. We will discuss their inert nature and stability, as well as the changes in their physical properties as we move down the group.
Moving on, we will study Group 1 elements, also known as alkali metals. We will observe the physical changes that occur as we move down the group and conduct experiments to investigate their chemical properties with water, oxygen gas, and chlorine.
By the end of this chapter, we will have a solid understanding of the Periodic Table of Elements and the characteristics of elements in Groups 18 and 1.
• Describing the historical development of the Periodic Table of Elements.
• Deducing the basic principles of elements arrangement in Periodic Table of Elements
• Describing the modern Periodic Table of Elements
• Generalise the relationship between proton number and position of elements in Periodic Table of Elements
• Relating the inert nature of elements in Group 18 with its stability
• Generalise the changes in physical properties of elements when going down Group 18
• Describing the uses of elements of Group 18 in daily life
• Generalise the physical changes of elements when going down Group 1
• Investigate through experiment the chemical properties of Group 1 elements with: (i) water (ii) oxygen gas (iii) chlorine
• Generalise the changes in the reactivity of elements when going down Group 1
• Reasoning out the physical and chemical properties of the other elements in Group 1
• Generalise the changes in the physical properties of elements when going down Group 17
• Summarise the chemical properties of Group 17 elements
• Generalise the changes in the reactivity of elements when going down Group 17
• Predicting the physical and chemical properties of the other elements in Group 17
• Describing the trends in physical properties of elements across Period 3
• Conducting an experiment to observe changes in the properties of the oxides of elements across Period 3
• Describing briefly the uses of semi-metals
• Determining the position of transition elements in the Periodic Table of Elements
• Explaining the special characteristics of a few transition elements with examples
• Listing the uses of transition elements in industry
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