userdata-paziras-Chem101-Chap_02A

Userdata-paziras-Chem101-Chap_02A

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: er 2 THE LAW OF MULTIPLE PROPORTIONS · When two elements form more than one compound, the masses of one element in these compounds for a fixed ratio mass of the other element are in ratios of small whole numbers. Example: CARBON and OXYGEN form two compounds: CO and CO2 Meaning: The masses of OXYGEN, in these two compounds, for the same mass of CARBON are in a ratio of small whole numbers. Carbon monoxide Carbon dioxide Equal Masses of Carbon Ratio of Oxygen Masses is 1 : 2 3 Chemistry 101 Chapter 2 ATOMIC MODEL III. THE DISCOVERY OF THE ELECTRON · J. J. Thomson showed that the atoms of any element can be made to emit tiny negatively charged particles. · He investigated the conductance of gases through glass tubes called “gas discharge tubes” Cathode Rays J.J. Thomson investigated the properties of “CATHODE RAYS” and concluded: · Cathode Rays are a stream of very small and very light particles emitted the cathode. · These particles are negatively charged, since they travel from the Cathode (­) toward...
View Full Document

This document was uploaded on 03/18/2014 for the course CHEM 101 at Los Angeles Mission College.

Ask a homework question - tutors are online