17. Afterwards, they played in the water and dipped into a clean, fresh brook nearby. After swimming, they hang their wet clothes to dry them. What factor caused the drying of clothes? absence of heat C. presence of heat B. exposure to oxygen D. presence of oxygen A. 18. After taking their afternoon snacks, there were leftovers of ice cubes and butter, If they just left them on the table what would happen to the ice cubes and butter? A. They melt, physical change happens. B. They melt, chemical change happens. C. Nothing changes to the ice cubes and butter. D. Both the ice cubes and butter dissolved into thin air. 19. While taking their snacks treat, Rayne's father advised them to always do and follow the safety rules when handling objects that give or produce heat to avoid accidents or even death. Which of the following statements is NOT included in the reminders? A. Keep matches and flammable materials away from children's reach. B. Pull out the plug after using electric irons and stoves. C. Do not stack combustible materials inside the house. D. Do not inspect the gas tank for possible leaks. 20. Which of the following situations chemical change takes place when a certain object is exposed to heat? A. Heating a candle B. Roasting a chicken C. Boiling water in a kettle 100 pointa Ang makasagot at brainelss​