Thursday, June 2, 2011

CHEMISTRY QUESTION !!?

Please help. It is my homework. There's a total of 25 questions and I answered 23 except for these two:



The choices with ** are the ones I think is the right answer, but then I always doubt myself. so please help. thank you in advance to all!



7. What is the MOST massive particle?

A. Alpha particle **

B. electron

C. proton

D. neutron



18. How does a nuclear reaction differ from a chemical reaction?

A. In a chemical reaction elements are created and destroyed

while all elements are conserved in a nuclear reaction.

B. There is no actual difference in the two reactions. The only

difference is that a nuclear reaction emits radiation while a

chemical reaction emits heat. **

C. Entropy is increased in a chemical reaction while it is

decreased in a nuclear reaction.

D. In a nuclear reaction the elements change identities; in an

ordinary chemical reaction they do not.

E. Entropy is increased in a nuclear reaction while entropy

decreases in a chemical reaction.

[:CHEMISTRY QUESTION !!?
well it seems that you have it correct. great jobCHEMISTRY QUESTION !!?
7. What is the MOST massive particle?

A. Alpha particle **

B. electron

C. proton

D. neutron



Yes! An alpha particle is fancy for an atom of helium with a mass of 4.



18. How does a nuclear reaction differ from a chemical reaction?

A. In a chemical reaction elements are created and destroyed

while all elements are conserved in a nuclear reaction.



Never destroyed nor created!!!!



B. There is no actual difference in the two reactions. The only

difference is that a nuclear reaction emits radiation while a

chemical reaction emits heat. **



Sounds legit!!



C. Entropy is increased in a chemical reaction while it is

decreased in a nuclear reaction.



Spontaneity generally always increases ... espec. in these reactions!!!



D. In a nuclear reaction the elements change identities; in an

ordinary chemical reaction they do not.



Nope ... identities change equally.



E. Entropy is increased in a nuclear reaction while entropy

decreases in a chemical reaction.



Nopers ..





Great Job! It checks out with me. =D
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