1. rust( iron + water + oxgen)??? not sure 2. ashes( burned paper) 3. napanis na pagkain po. haha
1. Corrosion/Rusting of Metal - Presence of Oxygen and Water in contact with Iron.
2. Burning of Paper - Converted to CO2 gas
3. Digestion of Food in our body 
4. Reaction of Acid and Base - Neutralization forming its Salt.
5. Explosion of Fireworks
6. Rotting of Food.
7. Heating of Sugar to form Caramel.
8. Ripening of Fruits.
9. Changing color of Leaves during Season changes.
10. Baking a Cupcake (Involves formation of sodium carbonate from sodium bicarbonate)
V.Good!!!Thanks po.But may nasagot na po ako eh
late...but its okay coz ung mga sagot ko din naman ay ganyan din
Okay. no problem :)