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(Information From) : Education-And-Physics

Thomson's "plum pudding" model proposed that atoms consisted of positive charge distributed throughout a volume, with negative electrons embedded within. Rutherford improved on this by discovering that atoms have a small, dense positively charged nucleus at their center, with electrons in orbit around it. Both models helped determine that atoms contain balanced positive and negative charges. The three isotopes of hydrogen are: hydrogen-1 with 0 neutrons, hydrogen-2 with 1 neutron, and hydrogen-3 with 2 neutrons. The letter argues that media coverage of green chemistry initiatives is inadequate, as green chemistry can help reduce pollution by developing less harmful chemical products and materials to replace those causing environmental damage like plastic in oceans.

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runshi wang
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112 views4 pages

(Information From) : Education-And-Physics

Thomson's "plum pudding" model proposed that atoms consisted of positive charge distributed throughout a volume, with negative electrons embedded within. Rutherford improved on this by discovering that atoms have a small, dense positively charged nucleus at their center, with electrons in orbit around it. Both models helped determine that atoms contain balanced positive and negative charges. The three isotopes of hydrogen are: hydrogen-1 with 0 neutrons, hydrogen-2 with 1 neutron, and hydrogen-3 with 2 neutrons. The letter argues that media coverage of green chemistry initiatives is inadequate, as green chemistry can help reduce pollution by developing less harmful chemical products and materials to replace those causing environmental damage like plastic in oceans.

Uploaded by

runshi wang
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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1.

Using the textbook and other references, prepare a brief report on early Greek
contributions to and ideas in the field of science, focusing on the work of one of
the following: Aristotle, Leucippus, Democritus, Thales, Heraclitus or
Empedocles. (10 pts)

Aristotle did major contribution to the science filed. According my research Aristotle
enough his student to think more probability about any science theory and equations.
Before Aristotle’s idea most student only now how to use equation apply to each
problem, but they have less understanding about each equation. Also, Aristotle enough
his students to observe with their eye, which influenced later scientist to discover and
analysis theory.

(information from http://jcmooreonline.com/2010/12/28/aristotles-enduring-contribution-to-science-


education-and-physics/)

2. Using Research Navigator, Google or other internet search engines, review the
two atomic models proposed by J.J. Thomson and Ernest Rutherford. How are
they alike and how do they differ? Include citations for your sources. (10 pts)

In Thomson’s Plum Pudding model, he discovered the negative charge electron, and he assumed
that will have a positive to balance the electron, which called “plum” as negative charge and
“pudding” as positive charge. However, he did not well explain positive charge in his model. In
Rutherford’s gold foil model, he developed Thomson’s model, which number of electrons
around with an atom and atom is positive charge. Therefore, Rutherford well explained the
balance in the atomic structure, which he finds out the positive charge. Both models determined
atomic structure that contain positive and negative charge to maintain balance.

(information from Wikipedia and baidu)

3 Write the electron configuration using quantum mechanical notation for each
element starting with lithium and ending with argon. (16 pts)
4 How many neutrons are in each of the three isotopes of hydrogen? (4pts)

        Hydrogen-1 has 0 neutrons.


        Hydrogen-2 has 1 neutron.
        Hydrogen-3 has 2 neutrons.

5. Based on how much or how little you have noticed in the media; do you think that
coverage of the Green Chemistry Initiative is adequate? Compose a letter to a
newspaper explaining what green chemistry is and urging expanded coverage.
(10 pts)

Respect sir,

I would like to write this letter to talk about the Green Chemistry after I did
some research about this topic.

I think the coverage of the Green Chemistry initiative is not adequate. Base on the
information that I found on United States Environmental Protection Agency, the Green
Chemistry applies across the life cycle of a chemistry product, which it can change
manufacture of some harmful product. It is different than clean up pollution, Green
Chemistry change each product to better for the environment. Pollution is harming our
environment in today. For example, the ocean pollution is becoming major issues. The
plastic stuff is hard to clean up, and they are harming and killing the ocean’s creatures.
If we can develop some material to replace plastic product, it will help ocean animals to
live. On National Geographic, it grades the Marine pollution as known as ocean
pollution about 5 to 8. This is a major problem for us. We must produce some less
harmful product, which Green Chemistry will help to solve this problem.

In the end, we all want to have a best condition for living, but pollutions only harming
and destroying our planet. We must take action about how to solve this problem instead
to talk about this problem. Every simple step will make a change, make this planet to a
better place.
Sincerely,

Runshi Wang

（information from https://www.epa.gov/greenchemistry/basics-green-chemistry


and https://www.nationalgeographic.org/encyclopedia/marine-pollution/

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