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...Chapter lesson the periodic table key concepts is a chart containing information about atoms that make up all matter an element substance made of only one type atom atomic number equal to protons in its nucleus electrons surrounding different same can have neutrons with numbers are called isotopes mass average arranged show characteristics and relationships between groups summary students will begin look closely at they be introduced basic given for elements most tables name symbol each focus on first try correctly match cards stu dents then watch several videos some interesting chemical reactions involving these objective identify by realize equals neutral also able explain meaning evaluation activity sheet serve as evaluate component e plan sheets formative assessments student progress understanding this lessons both use description beginning page middle school chemistry www middleschoolchemistry com american society teacher preparation print out pages shown laminate cut you need fro...