Chemistry Ch 3 notes

Chemistry Ch 3 notes - current c Ionic bonds conduct...

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

View Full Document Right Arrow Icon
=Chemistry Ch. 3 Notes Elements are classified broadly as Metals, Non-Metals, and Semi-Metals as well as classified in other groups. 1) Alkali Metals – (Group 1) a. Relatively Soft Metals b. Low Melting Points c. Often Contain Compounds With Chlorine (Cl) d. These Metals react with H 2 0 to liberate hydrogen. e. Heat from their reactions with H 2 0 can cause the hydrogen generated by them to burst into flame. 2) Alkaline Earth Metals (Group 2) a. b. Combine with Chlorine in a 2:1 proportion (MgCl 2 2) 3) Halogens a. Relatively Hard Solids b. When dissolved in water, they give solutions that conduct electric
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: current. c. Ionic bonds conduct electric currents (LiF & RbI)-Electronegativity o Metals are m ore electropositive than non-m e t allic ele m ents o Non m et als are m ore electroneg ative The Electronegativity of an atom is a measure of its power when in chemical combination to attract electrons to itself.-Electronegativity o Increases from left to right across the periodic table. o Decreases from the top down the table. Ionic Compounds have High Boiling Points The more electronegative atom of two atoms that are covalently bonded creates a dipole movement towards that atom....
View Full Document

{[ snackBarMessage ]}

Ask a homework question - tutors are online