Question

properties of matter / states of matter
name: ladoinan panfort integrated science
directions: choose if the statements are physical change or chemical change - just write the numbers in the box.

physical change\tchemical change
4,\t1,

1. bread baking in the oven
2. water drops forming on the surface of glass
3. copper turning green
4. cutting/chopping of onions
5. a puddle of water drying up
6. a silver necklace tarnishing
7. scramble eggs in a bowl – (not cooked)
8. paper burning
9. harvesting corn from the stalk
10. mixing baking soda and vinegar
11. snow falling
12. painting a room
13. car exhaust emitted into the atmosphere
14. adding protein energy powd water or milk
15. motorcycle chain rusting
16. cottonwood tree stomp car drum

Explanation:

To solve this, we identify physical and chemical changes. A physical change doesn't form new substances; a chemical change does.

Physical Change (no new substance, just form/state change):

• 2. Water drops (condensation, state change)
• 4. Cutting onions (shape change)
• 5. Puddle drying (evaporation, state change)
• 7. Scrambling eggs (mixing, no cooking)
• 9. Harvesting corn (separation, no new substance)
• 11. Snow falling (state change, solid water)
• 12. Painting a room (color/coating, no new substance)
• 14. Mixing powder (dissolving, physical mix)
• 16. Carving tree stump (shape change)

Chemical Change (new substance forms):

• 1. Bread baking (chemical reaction, new compounds)
• 3. Copper turning green (oxidation, new compound)
• 6. Silver tarnishing (oxidation, new compound)
• 8. Paper burning (combustion, new substances)
• 10. Baking soda + vinegar (reaction, gas/new compounds)
• 13. Car exhaust (chemical reaction in engine)
• 15. Chain rusting (oxidation, new compound)

Filling the Table:

Physical Change (box):

2, 4, 5, 7, 9, 11, 12, 14, 16

Chemical Change (box):

1, 3, 6, 8, 10, 13, 15

(Note: The original table had “4,” in Physical Change and “1,” in Chemical Change—these are likely placeholders. The above lists all items categorized correctly.)

Answer:

To solve this, we identify physical and chemical changes. A physical change doesn't form new substances; a chemical change does.

Physical Change (no new substance, just form/state change):

• 2. Water drops (condensation, state change)
• 4. Cutting onions (shape change)
• 5. Puddle drying (evaporation, state change)
• 7. Scrambling eggs (mixing, no cooking)
• 9. Harvesting corn (separation, no new substance)
• 11. Snow falling (state change, solid water)
• 12. Painting a room (color/coating, no new substance)
• 14. Mixing powder (dissolving, physical mix)
• 16. Carving tree stump (shape change)

Chemical Change (new substance forms):

• 1. Bread baking (chemical reaction, new compounds)
• 3. Copper turning green (oxidation, new compound)
• 6. Silver tarnishing (oxidation, new compound)
• 8. Paper burning (combustion, new substances)
• 10. Baking soda + vinegar (reaction, gas/new compounds)
• 13. Car exhaust (chemical reaction in engine)
• 15. Chain rusting (oxidation, new compound)

Filling the Table:

Physical Change (box):

2, 4, 5, 7, 9, 11, 12, 14, 16

Chemical Change (box):

1, 3, 6, 8, 10, 13, 15

(Note: The original table had “4,” in Physical Change and “1,” in Chemical Change—these are likely placeholders. The above lists all items categorized correctly.)