Study Guides (248,683)
United States (123,475)
Astronomy (24)
CAS AS 101 (13)
Midterm

Atoms and Matter - Midterm 2.docx

2 Pages
36 Views

Department
Astronomy
Course Code
CAS AS 101
Professor
Paul Withers

This preview shows 80% of the first page. Sign up to view the full 2 pages of the document.
Description
AS 101:ATOMSAND MATTER 1 ATOMS & MATTER: Charge: Protons (+) +1 Electrons (-) -1 Neutrons (~) 0 *Protons and Electrons Attract Mass: Protons and neutrons have same mass, need 2000 electrons to equal mass of 1 proton. Size: 15 Protons and neutrons  10 m (same size) Electrons are smaller and fuzzier Atoms = Protons, neutrons and electrons:  Equal numbers of protons and electrons  Typically, neutrons ~ protons  Nucleus of p and n (10 -15m to 10-1m)  Cloud of electrons (10 )0  Why do electrons stay w/ the nucleus?  Why do protons stay in the nucleus?  If an atom id 200m wide, how bug is the nucleus  10 m3 Electrons: Planets:  Attracted towards center by   Attracted towards center by  electrical forces gravity  Can not describe position and   Easy to describe position and  velocity clearly velocity.   Orbits frequently change   Conservation of energy,  momentum, angular  momentum. Energy of an electron in an atom: AS 101:ATOMSAND MATTER 2  Not possible to determine the position of an electron in an atom.  Only certain electron energies are permitted  Diffe
More Less
Unlock Document

Only 80% of the first page are available for preview. Some parts have been intentionally blurred.

Unlock Document
You're Reading a Preview

Unlock to view full version

Unlock Document

Log In


OR

Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


OR

By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.


Submit