A) dissolving of NaCl in water
B) photosynthesis
C) evaporation
D) freezing water
2006-09-08 06:15:02 · 8 answers · asked by chimstr 1 in Education & Reference ➔ Homework Help
Photosynthesis; the others are just changes in the state of a substance.
2006-09-08 06:17:36 · answer #1 · answered by Anonymous · 0⤊ 0⤋
photosynthesis.
A chemical change is a process in which reactants are changed into one or more different products
Photosynthesis:
Carbon Dioxide + Water + Light energy â Glucose + Oxygen + Water
6 CO2 + 12 H2O + ATP + NADPH â C6H12O6 + 6 O2 + 6 H2O
2006-09-08 13:20:57 · answer #2 · answered by nads 4 · 0⤊ 0⤋
A) is a chemical change as there is a new product Na2OH
2006-09-08 13:32:47 · answer #3 · answered by edahsein 1 · 0⤊ 0⤋
only photosynthesis in which food is prepared by plants by the reaction of CO2 from atmosphere,water from the roots and solar energy from sunlight
2006-09-08 13:18:39 · answer #4 · answered by raj 7 · 0⤊ 0⤋
Depends on youe definititon of "chemical change". If your definition is loose then all can apply.
2006-09-08 13:21:35 · answer #5 · answered by Michael B 5 · 0⤊ 0⤋
All of the above.
2006-09-08 13:20:27 · answer #6 · answered by Cary Grant 4 · 0⤊ 0⤋
photosynthesis
the others are physical changes
2006-09-08 14:22:59 · answer #7 · answered by glazeddonut27 3 · 0⤊ 0⤋
a) No
b) Yes
c) No
d) No
2006-09-08 13:22:30 · answer #8 · answered by sushobhan 6 · 0⤊ 0⤋