study sheet ch 7

study sheet ch 7 - Chemical Formulas and Compounds Formula...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

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

Unformatted text preview: Chemical Formulas and Compounds Formula unit- shows the number of atoms per molecule Monoatomic ion- ion is formed from a single atom Molecular shows the number of atoms Ionic shows a ratio Ions are formed from a single atom Some elements will not form ions (covalent) Some elements form ions without noble gas configuration D and p block form +2 or +3, +1 or +4 Ex. Zinc- always +2 Cadmium- always +2 Silver- always +1 O, sulfur, selenium are -2 Naming Cations (+ ions) Are written and named first by element name Add a roman numeral if it can form more than one (use stock system) Ex. Copper one chloride Copper (I) chloride, Cu+, CuCl Naming anions Root name + -ide ending Binary ionic compounds Have two different ions (two diff elements) crossing over Join for a neutral charge Number for cation becomes subscript for anion Rules for writing binary formulas: 1. Write cation first 2. Cross over charges by using absolute value of each ions charge as the others subscript2....
View Full Document

This note was uploaded on 09/28/2010 for the course CHEM Chemistry taught by Professor Plants during the Spring '10 term at Clear Creek.

Page1 / 4

study sheet ch 7 - Chemical Formulas and Compounds Formula...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online