Question

directions: answer each question by circling the correct choice. after you have finished all questions, color the picture on the back using the corresponding color choice. you may choose any color you want for any parts of the picture that are not assigned a color.

scenario,physical change,chemical change

1. a new substance is formed...,red,blue
2. a new substance is not formed...,yellow,sky blue
3. easily reversed...,yellow - green,orange
4. not easily reversed...,orange,sky blue
5. fog forming on a cold morning...,red,yellow
6. baking cupcakes...,green,sky blue
7. a beaker falling and shattering...,purple,sky blue
8. an old car rusting...,yellow,sky blue
9. roasting a marshmallow...,orange,green
10. the statue of libertys copper metal corroding to form a green patina...,blue,red
11. clouds forming...,blue,purple
12. pencil lead breaking...,purple,yellow
13. a puddle of water drying up...,yellow - green,dark blue
14. milk souring...,yellow,red
15. water boiling...,sky blue,red
16. pouring liquid drain cleaner down a clogged sink...,orange,yellow - green
17. digesting a slice of pizza...,yellow,red
18. dissolving sugar in tea...,yellow - green,orange
19. soda fizzing...,red,sky blue
20. combining baking soda and vinegar...,orange,blue

Explanation:

1. A new substance formed is a chemical change (Blue).
2. No new - substance formed is a physical change (Yellow).
3. Easily reversed is a physical change (Yellow - Green).
4. Not easily reversed is a chemical change (Sky Blue).
5. Fog forming is a physical change (Red) as it's a phase change of water.
6. Baking cupcakes is a chemical change (Sky Blue) due to chemical reactions in baking.
7. Beaker shattering is a physical change (Purple).
8. Car rusting is a chemical change (Sky Blue) as iron reacts with oxygen.
9. Roasting marshmallow is a chemical change (Green) due to charring.
10. Copper metal corroding is a chemical change (Red).
11. Clouds forming is a physical change (Blue) as it's a phase change of water.
12. Pencil lead breaking is a physical change (Purple).
13. Water drying up is a physical change (Yellow - Green).
14. Milk souring is a chemical change (Red).
15. Water boiling is a physical change (Sky Blue).
16. Pouring drain cleaner is a chemical change (Yellow - Green).
17. Digesting pizza is a chemical change (Red).
18. Dissolving sugar is a physical change (Yellow - Green).
19. Soda fizzing is a chemical change (Sky Blue).
20. Combining baking soda and vinegar is a chemical change (Blue).

Answer:

1. Blue
2. Yellow
3. Yellow - Green
4. Sky Blue
5. Red
6. Sky Blue
7. Purple
8. Sky Blue
9. Green
10. Red
11. Blue
12. Purple
13. Yellow - Green
14. Red
15. Sky Blue
16. Yellow - Green
17. Red
18. Yellow - Green
19. Sky Blue
20. Blue