10:54 504 Assignment 11 Chapter 14 Answer... O Switch To Light Mode ... chemical physical 11. Compost pit turns into mulch chemical physical 12. A computer is turned on . . . . .. .... chemical physical 13. An electrical short melts a computer's integrated circuits ... ...... chemical physical 14. A car battery runs down . . ... ...... chemical physical 15. A pencil is sharpened --. --- chemical physical Page 2 16. Mascara is applied to eyelashes chemical physical 17. Sunbather gets tan lying in the sun chemical physical 18. Invisible ink turns visible upon heating . . . . . . ... chemical physical 19. A light bulb burns out . . . . . . . . . . . ...... chemical physical 20. Car engine consumes a tank of gasoline chemical physical 21. B vitamins turn urine yellow . . . . . . . ...... chemical physical 11 0= n Dashboard Calendar To Do Notifications Inbox10154 ( Assignment 11 Chapter 14 Answer... [5 0 Switch To Light Mode ASSIGNMENT #11: Chapter 14 Elements ofChemistry Physical and Chemical Changes 1. What distinguishes a chemical change from a physical change? 2' Based upon observation alone, why is distinguishing a chemical change from a physical change not always so straight-forward? Try your hand at categorizing the following processes as either chemical or physical changes. Some of these examples are debatable! (circle one) 3. A cloud grows dark .................. chemical physical 4. Leaves produce oxygen .......... chemical physical 5. Food coloring is added to water chemical physical 6. Tropical coral reefdies ........... chemical physical 7. Dead coral reef is pounded by waves into beach sand chemical physical negar pai'ate chemical physical 9. Soda drink goes at chemical physical 10. Sick person develops a fever , chemical physical l l. Compost pit turns into mulch Dashboard Calendar