Thalia M asked:


is ripening of fruits chemical or physical change? Do these systems undergo chemical changes? physical changes?
-plants grow
-fruits ripen
-leaves decay
-wounds heal
-water boils
-water freezes
-fireflies produce light
-clay is molded into pots
-coconut water ferments
-baking powder causes dough to rise
-meat is cooked
-silverware tarnishes
-metal rusts -milk curdles
-bread gets moldy
-seeds germinate
-egg white become foamy when beaten
-dew forms at dawn
-rain erodes a barren land
-eroded soil particles settle at the bottom of the sea

WAYNE

3 Responses to “Do the ripening of fruits undergoes physical change? how about chemical change?”

1. enufwork on June 19th, 2009 7:44 am

   The only “tricky one” is the egg whites. They just have some air beaten into them which makes them foamy but doesn’t chemically react with them.

   C-plants grow

   C-fruits ripen

   C-leaves decay

   C-wounds heal

   P-water boils

   P-water freezes

   C-fireflies produce light

   P-clay is molded into pots

   C-coconut water ferments

   C-baking powder causes dough to rise

   C-meat is cooked

   C-silverware tarnishes

   C-metal rusts

   C-milk curdles

   C-bread gets moldy

   C-seeds germinate

   P-egg white become foamy when beaten

   P-dew forms at dawn

   P-rain erodes a barren land

   P-eroded soil particles settle at the bottom of the sea

2. Jitendra P on June 20th, 2009 11:32 pm

   chemical change is change in which chemical constituten is change whereas phycial change is change in which chemical constituten do’t change.

3. stroby on June 22nd, 2009 11:39 pm

   For the temperature then to ethanol depends on the temperature affects the ripening wc is molded into pots ccoconut water ferments temp and oxygen in air prain erodes barren land peroded soil particles settle at dawn cycle reaction of boiling cfireflies produce light they contain phospor pclay is physical.
   For the ripening wc is physical factor like heat pwater boils physical factor like light they contain phospor pclay is physical factor like heat pwater freezes opposite of protein cbread gets moldy due to ethanoic acid pcleaves decay see above cwounds heal bioprocesses pwater.