Who Sent the Cake? Using Science to Solve a Mystery

Who Sent the Cake? Using Science to Solve a Mystery
Who Sent the Cake? Using Science to Solve a Mystery
Who Sent the Cake? Using Science to Solve a Mystery
Who Sent the Cake? Using Science to Solve a Mystery
Who Sent the Cake? Using Science to Solve a Mystery
Who Sent the Cake? Using Science to Solve a Mystery
Who Sent the Cake? Using Science to Solve a Mystery
Who Sent the Cake? Using Science to Solve a Mystery
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Please make sure you always have the most recent version of my products, I update my products all the time! I am a science teacher who is still in the classroom and every time I use one of my lesson plans, I think of new things to add! Please make sure you always have my latest version. Here’s how:
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Have your students solve a mystery using chemistry!
A crime has occurred! This crime is age appropriate for 2nd and 3rd grade students. A dog is in “jail” for stealing dog food. Someone tries to help him escape by hiding a metal file inside of a cake– your students will figure out who sent the cake! By doing chromatography and chemistry, the mystery will be solved using science.

Materials: paper towels or chromatography paper (available at wards.com https://www.wardsci.com/store/catalog/product.jsp?catalog_number=153708)water, magic markers, baking soda, baking powder, flour, grape or cabbage juice (available at SteveSpangler.com or make your own).

The first experiment your students will perform to solve the mystery is called Paper Chromatography. Paper chromatography is a fun and easy science experiment that I have done with all of the grade levels I teach: PK - 8. For these experiments, you will need paper towels or chromatography paper, water, markers, and tape. Strips of paper with marker lines are them are suspended in water, the water will creep up the paper via capillary action separating the mixture of marker ink into a rainbow of colors – the results are amazing! My students love to see which colors separate out of the marker ink. Black and brown always produce the most interesting results – they have the most colors in them and the results are such a surprise. Chromatography will be performed on the 3 suspects’ markers to figure out who wrote the mystery note that came with the cake.

The second experiment your students will perform to solve the mystery is called Mystery Powders. A strange white powder was found on the cake plate – your students will figure out what it is and by doing so, they will know whose kitchen it came from. I have done this lab for 20 years with my students – it is always a favorite!

This packet includes:

-Explanations of mixtures and paper chromatography

-Detailed directions on how to perform paper chromatography, materials needed, procedure, photographs of my students’ experiments, student prediction worksheet, student chromatography results worksheet, photograph of student results, student recording data chart

-Who Sent the Cake? - original mystery, class discussion questions included to encourage critical thinking on how this mystery can be solved using evidence and chemistry experiments.

-Mystery Powder chemistry experiments includes detailed directions, materials, procedure, set-up, student data chart and answer key

-Paper Chromatography - Mystery Suspects Markers experiment - set-up and directions, photographs of my students’ experiment results, student worksheet included

-What Really Happened - the true story behind the mystery

Follow my store! You will receive an email every time I put up a freebie or a new product for sale.To follow me, go to the top right of this page where you see my photo, next to the little green star it says “Follow Me”. Click on that and you’ll receive the email updates. Thanks for stopping by my PK – 4 science store! Sue

Please note: these units are for the use of one educator.
If you would like to share my lesson plans with a co-worker, your team, your school, or your district, please purchase multiple licenses which are offered at half price.
When you click “add to cart”, please also click on “ buy licenses to share” and then enter the quantity of half-price licenses. Thank you so much!!
Sue from Science for Kids :)


Total Pages
34 pages
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