MAKING CHALK! Lab Activity (% Yield - Physical and Chemical Change)

MAKING CHALK! Lab Activity (% Yield - Physical and Chemical Change)
MAKING CHALK! Lab Activity (% Yield - Physical and Chemical Change)
MAKING CHALK! Lab Activity (% Yield - Physical and Chemical Change)
MAKING CHALK! Lab Activity (% Yield - Physical and Chemical Change)
MAKING CHALK! Lab Activity (% Yield - Physical and Chemical Change)
MAKING CHALK! Lab Activity (% Yield - Physical and Chemical Change)
MAKING CHALK! Lab Activity (% Yield - Physical and Chemical Change)
MAKING CHALK! Lab Activity (% Yield - Physical and Chemical Change)
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Make CHALK!

Here’s a simple and fun lab to do with your students that’s educationally jam-packed. Aqueous solutions of sodium carbonate, (can also use baking soda), and calcium chloride, (aka Ice Melt), and you get calcium carbonate, (basically chalk) and table salt. Students collect the insoluble chalk by filtration and the salt remains in solution. Dry the precipitation to calculate the percent yield, and if you have time, evaporating the water from the saline solution and voila, you have your salt.

Students of all ages enjoy this lab activity and indeed you can use it over a very wide range of ages and ability levels, (elementary students will enjoy observing the reaction and attempting to collect the products, at the same time I have students in high school and AP chemistry classes performing the same lab with just as much success). In any case, at this juncture, I have written this lab for use for students ranging from middle school to early college – it is basically designed for chemistry or physical science students. [My intension is to go back and add to this activity, adding handouts for younger students – making it a ‘true’ Zip Lab. If you are an elementary teacher interested in that please let me know and I will get to work on that sooner than later.]

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.

MAKING CHALK!

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

9 pages

Activity cover sheet with Conceptual Diagrams
Introduction and procedure
Student blank flow chart
Quantitative flow chart and procedure
‘Feasibility’ Study post lab conclusion worksheet
Practice problems
Curiosity Quest – Advance research questions for advanced students and/or differentiated learning


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- www.corestandards.org

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.
Total Pages
9 pages
Answer Key
N/A
Teaching Duration
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