Signs Of Chemical Change -

1. Substances formed
2. Bubbles released
3. Solid gets dissolved

<aside> 💡 FORMATION OF IONS

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Ion - Electrically charged particle/s formed by the loss or gain of electrons [Unequal no. of protons & electrons] → To get a full outer shell [Stability]

Ionization of metals and non-metals

• Metals → Lose electrons → Cations [+]
• Non-metals → Gain electrons → Anions [-]

<aside> 💡 IONIC BONDS

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Metal + Nonmetal [Forms lattice of alternating + & - ions]

Metal loses, Nonmetal gains → No overall charge of compound

Held by → Electrostatic Forces bw opposite charges → Ionic bond

Dot-and-cross diagrams

Marking Points -

1. Ratio
   1. Eg. NaCl = 1:1, Fe2O3 = 2:3
2. Charge - Top right