Sunday, July 26, 2009

If an atom loses electrons, it becomes a (COULD SOMEONE GOOD WITH PHYSICAL SCIENCE PLEASE HELP ME?)?

A- negatively charged ion.


B- positively charged ion.


C- neutral atom.


D- neutral ion.





2. What is the SI unit of electric charge?


A- ampere


B- ohm


C- volt


D- coulomb





3. Walking across a carpet is an example of charge being transferred by


A- contact.


B-induction.


C-static electricity.


D-friction.

If an atom loses electrons, it becomes a (COULD SOMEONE GOOD WITH PHYSICAL SCIENCE PLEASE HELP ME?)?
Howdy %26amp; I sure hope all is well. :) As for your question:





For Question 1, both A %26amp; B are viable options. When an atom or molecule loses or gains 1 more valence electrons, it becomes an ion, with a positive or an electrical charge. In appearance, B is the answer, and it may technically be. The thing is, losing 1 or more valence electrons alone does not qualify an atom as a positively charged ion.





A positively charged ion has less electrons in its electron shells than protons in its nuclei, and is known as a cation. So I guess it depends on how many electrons and protons it has to begin with.





For now, the safest answer is B.





Check out the article the link to which I included in the source list.





Question 2) The SI unit of an electric charge is the Coulomb.


Again, do check the article on that too.





Finally, Question 3 is an example of static electricity. As you walk or rub something against another you transfer electrons from the first to the second object.





Trivia note: That's how lightning works! Just so you never underestimate the power of static electricity!





I just hope the articles better explain these concepts than I can. It's been a long time since I learned and read anything on science, especially physics. So there's a great deal that I forgot. :)





I sure hope that was as clear %26amp; as helpful as you needed it to be. :) Good luck, take care %26amp; have a great day. :)





Cheers! :)
Reply:1 B


2 C


coulomb:The amount of electricity transported by a current of one ampere flowing for one second.


volt:Basic unit of electrical potential. One volt is the force required to send one ampere of electrical current through a resistance of one ohm





A Static electricity is not a method of transfer but rather a description of what it is.
Reply:B ( losing electrons leaves a positive charge )





D (Coulomb is the unit of charge )





D (Friction is the mechanism; it produces static electricity but rubbing your feet on the carpet increases the movement of charge ; you discharge static electricity --e.g. in operating rooms or where there are explosive gases -- by having conductive shoes which, nevertheless, have contact with the floor )
Reply:B- positively charged ion.


D- coulomb


D-friction - like rubbing a balloon on a sweater or amber on rubber


-------





"The coulomb (symbol: C) is the SI unit of electric charge. It is named after Charles-Augustin de Coulomb." http://en.wikipedia.org/wiki/Coulomb
Reply:B, D, C

birthday flowers

No comments:

Post a Comment