al change ange of energy 7. Which of the following situations is an example of evaporation? D. change in molecule A. Formation of ice B. Formation of dews C. melting of ice cream 8. What causes rust to form? D. drying of clothes under the sun A. Reaction of iron to heat C. reaction of iron to oxygen B. Reaction of iron to force D. reaction of iron to cold weather 9. Which of the following will produce rust when it is wet? A. Ball B. comb C. nail D. paper plate 10. Amy's family had a reunion and there were leftovers. She observed that some of the foods had a change in color and smelled bad. What do you think happened to the food? A. The food got soft. C. The food was fresh B. The food got less D. The food was spoiled. 11. What property stays the same during physical change and chemical change? A. Density B. shape C. mass D. arrangement of particles 12. Which is not a clue that could indicate a chemical change? A. Change in color C. change in energy B. Change in shape D. change in odor 13. What best describes a physical change? A. The composition of a material changes. B. The composition of a material stays the same. C. The form of a material stays the same. D. Mass is lost 14. If the chemical properties of a substance remain unchanged, and the appearance or shape of a substance changes, it is called a C. both physical and chemical change A. Chemical change D. neither physical nor chemical change B. Physical change 15. When a new substance is formed with properties different from the original substance, it is called a B. freezing C. physical change D. boiling A. Chemical change SA PAGPAPAKATAO (WEEK 5)