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.
Lynnwood, Washington - Geography. 1  According to the United States Census Bureau, the city of Lynnwood has a total area of 7.86 square miles (20.36 km2), of which 7.84 square miles (20.31 km2) is land and 0.02 square miles (0.05 km2) is water. The city is in the southwestern part of Snohomish County in Western Washington, and is considered part of the Seattle metropolitan area.