A. CONCEPT EVALUATION Assignment page 29-32 I. Identification: Identify the following as to physical change (PC) or chemical change (CC). 1. A lump of sugar dissolves in water. 2. A piece of chalk is ground to dust. 3. A silver spoon tarnishes. 4. An aluminum pot is put on a burner and gets hot. 5. An antacid (calcium hydroxide) neutralizes stomach acid (hydrochloric acid). 6. An iron bar rusts. 7. An iron rod gets magnetized. 3. Copper turning to brass 9. Physical change (PC) Chemical change (CC) chemical change (cc) Physical change (PO Chemical change (CC) Dry ice goes from a solid to a gaseous form of carbon dioxide. 0. Glass breaks. 1. Gold melts or solidifies. 2. Ice melting 3. Iron rusting 4. Methane burns. 5. Sand is mixed in with salt. 5. Steam condensing 7. Water boils out of a kettle or condenses on a cold glass. C. Water evaporating . Water freezing Wood burning Physical change (PC) Physical change (PC) Physical change (PC) Chemical change CC Physical change (PO Chemical change (CC) rue or False: Write T if the statement is true and F if the statement is false. 1. Gas and vapor means the same. 2. When water freezes or when water becomes a vapor, is it still the substance "water?" 3. Liquids expand in all directions to take the shape of the container it is in. 4. When solids reach their melting points, they become liquids. 5. With physical change, no new substance is formed. 6. With chemical change, a chemical reaction occurs. 7. With physical change, energy is either given off or absorbed.
Answer (1)
Answer:I. Identification: Physical Change (PC) or Chemical Change (CC)1. A lump of sugar dissolves in water — PC2. A piece of chalk is ground to dust — PC3. A silver spoon tarnishes — CC4. An aluminum pot is put on a burner and gets hot — PC5. An antacid neutralizes stomach acid — CC6. An iron bar rusts — CC7. An iron rod gets magnetized — PC8. Copper turning to brass — CC9. Dry ice goes from solid to gas — PC10. Glass breaks — PC11. Gold melts or solidifies — PC12. Ice melting — PC13. Iron rusting — CC14. Methane burns — CC15. Sand mixed with salt — PC16. Steam condensing — PC17. Water boils or condenses — PC18. Water evaporating — PC19. Water freezing — PC20. Wood burning — CCTrue or False:1. Gas and vapor means the same — F2. When water freezes or vaporizes, is it still water — T3. Liquids expand in all directions to take the shape of the container — T4. When solids reach melting points, they become liquids — T5. With physical change, no new substance is formed — T6. With chemical change, a chemical reaction occurs — T7. With physical change, energy is either given off or absorbed — Tplease drop a heart, rate, and if possible, mark it as the brainliest answer ❤️
