Science
Ions and ionic compounds
In this Class 9 Science topic from Atomic Foundations of Matter, students learn how atoms become ions by gaining or losing electrons. They distinguish positively charged cations from negatively charged anions and understand how electrostatic attraction between oppositely charged ions forms ionic compounds. The topic also introduces writing simple chemical formulas, using charge balance, and relating ionic structure to properties such as crystalline form, hardness, and electrical conduction in molten or dissolved states.
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Practice questions are not available for this topic yet. We plan to add questions with clear explanations soon. You can keep practising other topics in the meantime.
- Class / subject
- 9 · Science
- Chapter
- Atomic Foundations of Matter
- Topic
- Ions and ionic compounds
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