1 Pure substances are further broken down into elements and compounds. Mixtures are physically combined structures that can be separated into their original components.  A chemical substance is composed of one type of atom or molecule.
Lynnwood 10 Day Weather. Thursday:The Lynnwood forecast for Apr 13 is 51 degrees and Patchy light rain. There is 76 percentage chance of rain and 9 mph winds from the South. Friday:The Lynnwood forecast for Apr 14 is 48 degrees and Patchy rain possible.
1 There is 76 percentage chance of rain and 10 mph winds from the West-Southwest. 2  Thursday:The Kirkwood forecast for Aug 18 is 77 degrees and Patchy rain nearby. There is 60 percentage chance of rain and 7 mph winds from the West.  Friday:The Kirkwood forecast for Aug 19 is 79 degrees and Patchy rain nearby.