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.
Sunday:The Lynnwood forecast for Apr 16 is 52 degrees and Cloudy. There is 60 percentage chance of rain and 7 mph winds from the North-Northwest. Monday:The Lynnwood forecast for Apr 17 is 52 degrees and Light rain shower. There is 71 percentage chance of rain and 8 mph winds from the South.
Brentwood, CA Weather. Brentwood, CA climate is warm during summer when temperatures tend to be in the 70's and cold during winter when temperatures tend to be in the 40's.alifornia Weather. Brentwood, CA climate is warm during summer when temperatures tend to be in the 70's and cold during winter when temperatures tend to be in the 40's.