Class notes
Atoms and more
- Course
- General chem
- Institution
- Towson University
Chapter 2 chem notes on atoms etc
[Show more]
Seller
Follow
Content preview
Atoms, Molecules, and Ions Dalton’s Atomic Theory: Elements are composed of extremely small particles called atoms. All atoms of a given element are identical, having the same size, mass, and chemical properties. The atoms of one element are different from the atoms of all other elements. Compounds are composed of atoms of more than one element. In any compound, the ratioof the numbers of atoms of any two of the elements present is consistently either an integer or a simple function.
A chemical reaction involves only the separation, combination, or rearrangement of atoms; it does not result in their creation or destruction. Law of conservation of mass: Mass can neither be created nor destroyed… just transferred from one form to another. Law of definite proportions: All samples of a compound have the same ratio of their elements. (If the ratio charges, the compounds change!!!). Law of multiple proportions: If elements form multiple compounds, ratio of second element to first in the two is proportional.
Rutherford’s model of the atom: Atomic radius ~100pm= 1x10-10m Nuclear radius ~5x 10-3pm= 5 x 10-15m Atomic number and mass number:
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 kaylahill1. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $30.49. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
72042 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now