Chapter 2 The Material World Molecules Chapter 2 The Material World
Forming Covalent Compounds
What are covalent compounds? Covalent compounds are compounds formed between two non-metals or groups of nonmetals Electrons are NOT gained or lost →Electrons are shared
Examples: Covalent Bonds Draw the Lewis dot diagram to show the bond between carbon and hydrogen. H H C H H
Naming Covalent Compounds RULE: Prefix-1st Non-Metal + Prefix-2nd Non-Metal (-ide) Prefix: 1-mono 2-di 3-tri 4-tetra 5-penta 6-hexa Examples: H2O Dihydrogen monoxide CCl4 Carbon tetrachloride SCl2 Sulfur dichloride P2S3 Diphosphorus trisulfide
I Have No Bright Or Clever Friends Diatomic Gases There are 7 gases that are always found as a pair of atoms bonded with themselves - diatomic = 2 atoms I Have No Bright Or Clever Friends
O O I I N N H H F2, Cl2, Br2, I2 O2 N2 H2 Diatomic Gases Double bond Triple bond