Exam (elaborations)
Atomic Structure Questions and Answers 100% Verified
- Course
- Institution
Exam of 4 pages for the course Atom at Atom (Atomic Structure)
[Show more]
Content preview
Atomic StructureAtom - answer the smallest particle of an element that still has the properties of that
element.
Proton - answer positive particles in the nucleus
Neutron - answer neutral particles in the nucleus with protons
Electron - answer negative particles outside of the nucleus in the electron cloud
Quarks - answer smallest particle that makes up p+ and n
valence electrons - answer Electrons on the outermost energy level of an atom
Draw a timeline of the discovery of the structure of the atom. Include date, name, and a
brief summary of each discovery or model. - answer Democritus- first to name the atom
John Dalton- Sphere model, atom is a solid sphere that can't get any smaller, elements
are made of atoms have the same mass and compounds are atoms of different
elements combine.
Dmitri Mendeleev- developed the first periodic table, organized by atomic mass
JJ Thomson- Plum pudding model, the atom is divisible, it is positively charged sphere
with negative particles embedded throughout.
Ernest Rutherford- Nuclear model, gold foil experiment, mass of an atom and its
positively charged particles were in the nucleus, with low mass negatively charged
particles surrounding it.
Henery Moseley- discovered the number of protons is unique to each element arrange
the periodic table.
Niels Bohr- Bohr model, electrons are negative particles travel in orbits around the
nucleus that is made of positive protons and neutrons.
Schrodinger and Heisenberg- Electron cloud, nucleus is surrounded by an electron
cloud that is divided into shells, but do not travel in fixed orbits.
Differentiate between the Bohr Model and the Electron Cloud Model. - answer The
difference between the Bohr model and the electron cloud is that the Bohr model
electrons travel in fixed orbits. While a electron cloud the electrons are divided into
shells and do not travel in fixed orbits.
Summarize our current understanding of atomic structure. Include the two parts, where
the three particles are located, and where the mass and volume in an atom mainly exist.
- answerAtom's are made up of nucleus and electron cloud is where the volume comes
from.
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller julianah420. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $13.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
84146 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now