1. Ice cubes are put in the freezer 2. Paper becomes ash after burning. 3. Water is boiled for drinking. 4. Dry ice becomes smaller without melting, 5. Lard melts when heated. 6. Ponds become shallow during summer. 7 Nails becomes rusty when wet. 8. Diesel fuel is used to run jeepneys. 9. Fuel cells are used in taxis. 10. A silver plate forms a black film when exposed to oxygen. ​