Question

What type of reaction is photosynthesis, the process where carbon dioxide combines with water to form glucose in the presence of sunlight?

endothermic

exothermic

decomposition

disintegration

@taekwondochick @SyedMohammed98

Answer 1

i think it's exothermic...because the word combine means they join together and when two substance combine together energy is released...

Answer 2

I would say endothermic, it needs to absorb energy in order for the reaction to occur.

Answer 3

@Somy

Answer 4

@Somy

Answer 5

http://chemistry.about.com/cs/generalchemistry/a/aa051903a.htm

Answer 6

i would have to say A or B

Answer 7

its endo

Answer 8

Hi there. The reaction is endothermic, becausmost of the enrgy is absorbed by the reactants, rather than been released by the product. What makes this the case is because the reactants need both heat energy and sunlight energy.

Answer 9

i am so lost

Answer 10

Its okay. The answer is A.

Answer 11

Its not exothermic reaction

Answer 12

Did you understood my explaination @taekwondochick ?

Answer 13

@Hoslos Yes, I wasnt the one who asked the question though.

Answer 14

shhh*t...sorry my bad....
actually i thought the reactants are combining together so energy is released....

Answer 15

My mistake, I meant @brandbear .

Answer 16

i am still lost

Answer 17

Photosynthesis - a process by which sunlight is used as source of energy to make glucose using raw materials : CO2 and H2O
here - consumption of energy is high, release of energy is low

endothermic - energy required to start the reaction is higher than energy released after formation of product

exothermic - energy required to start the reaction is lower than energy released after formation of product

decomposition - break down pretty much

disintegration - losing cohesive strength

Answer 18

thanks :)

Answer 19

remember, majority if not all reactions that are ' Synthesis ' type = usually are endothermic
as here, we are synthesizing Glucose using energy from sunlight and raw materials

and reactions of decomposition/ break down type = are usually exothermic
such as respiration, Glucose breaks down to CO2, H2O and energy

Answer 20

i hope it makes sense? @brandbear

Answer 21

okay now it does

Answer 22

good :)