Chemistry Lab Experiment: Molar Mass

Chemistry Lab Experiment: Molar Mass
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Determining the molar mass is an essential component of any chemistry class. Yet many traditional labs require difficult and lengthy procedures often involving dangerous chemicals. This lab couldn’t be easier, can be done quickly, while still providing truly excellent results. Making this activity a great lesson for high school chemistry or physical science classes as well as a great home school activity.

In general, Zip Labs are science and math activities broken down into ‘horizontal and vertical’ educational increments. By ‘horizontal’ increments I mean each activity can be completed in a minimum of 60 minutes. However, the teacher, and/or student may choose to extend the activity over a longer time period or even days. By ‘vertical’ increments I mean each activity is broken down into segments according to grade and difficulty level. So teachers and/or students can decide where to start and how far to go with the topic.

Each Zip Lab includes potentially much more than any teacher will use at the particular grade level he or she may teach. However, it is my hope that teachers, and students, at lower grade levels will gain valuable insight by looking ahead to see how their teaching/learning will be applied in the future. While teachers and students at higher grade levels can reflect on topics that they should have learned in earlier grades. It is my hope that students see their education as a continuum rather than a series of disconnected and random topics.

Zip Labs include diagrams and illustrations that I hope are appealing to a wide range of ages. However, teachers can choose to omit them if they like. Also included is a Common Core ‘Depth of Knowledge’ (DOK) and grade level range ‘sliding’ indicator to help students visualize the relevance of their work.

New in this activity, optional QPA, (Quality Performance Assessment) ‘Stamps’ for Competency Based grading as well as differentiated lesson planning!

Chemistry, Physical Sciences, and; College-Level Classes: What you get…

~ 6 pages

Activity cover sheet
Background and instructions
Lab write up worksheet(s)
Practice problems worksheets
Advanced activities for advanced students, differentiated learning activities, QPA’s and
Optional Competency Grading

-Depth of Knowledge and Grade Level Slide Indicator Graphics

This unit activity meets or exceeds 21st Century and STEM learning expectations, and Common Core learning outcomes. Note: although ZIP-labs fulfill many CCSS specific CCS standards are not listed because ZIP-labs are designed to be used over many graded levels so the specific CCSS may be different depending upon these factors. For a list of CCSS in your state please visit-

New – Integrated Holistic QPA, (that’s Quality Performance Assessment) created by me! This activity requires NO RUBRICS! The rubric is integrated into the activity itself. Much less work for you and far more meaningful to your students.

Working to change STEM to STEAM.
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