• Email
  • Facebook
  • Instagram
  • Pinterest
  • RSS
  • Twitter

Weird, Unsocialized Homeschoolers

Honest. Quirky. Real. Stereotype-smashing humor for homeschooling families.

  • Home
  • New?
  • Quirky & Real
    • Encouragement
    • Tips & Tricks
    • Challenges
    • How-to’s
    • Humor
    • Planning & Organization
    • Bible Study
  • Hands-On Learning
    • Activities & Resources
    • Field Trips
    • Nature Study
    • Recipes
  • Ages & Stages
    • Preschool
    • Elementary
    • Middle School
    • High School
  • By Subject
    • History and Geography
    • Language Arts
    • Math
    • Science
  • Reviews
    • 2018-19 11th Grade Curriculum
    • Reviews by Subject
    • Curriculum & Reviews
    • Top Picks
  • Freebies
  • Top Posts
  • Our Team
  • Skip to main content
  • Skip to primary sidebar
You are here: Home / Hands-on Learning / Chemical Reactions with Seashells

Chemical Reactions with Seashells

Did you like this article? If so, please help by sharing it!

819shares
  • Facebook 271
  • Twitter
  • Email
Written by Marci Goodwin of The Homeschool Scientist.

* This post may contain affiliate links or sponsored content. *

One of our favorite family vacation destinations is the beach. I love it! The sand, the waves, and the sun are all glorious. I just can’t get enough!

When we do take a trip to the beach, we usually spend as much time in the sand and water as possible. We dig in the sand, snorkel in the shallow water when the waves are calm, jump the waves when they are high, and nap under our beach canopy when needed.

Chemical Reactions with Seashells

One of our favorite things to do as a family on the beach is collect shells. We find them on early morning walks on the beach and as they wash up throughout the day. By the end of our vacation, we usually have a sand bucket full of them.

When we get home, we sort them according to their types. Sometimes we use a shell guide to try and identify them. We might also put them in jars to admire them and remember our trip. And, sometimes we use them for a chemistry experiment!

What Is A Seashell?

Who isn’t mesmerized by shells being washed up on shore by the crashing waves? Their shapes and colors make them like treasures pulled from the deep mystery of the ocean. Collecting shells on the beach can be addicting. You never know what the next one might look like.

seashell chemical reactions

But what are seashells?

Seashells are exoskeletons formed by soft-bodied mollusks such as oysters and clams for protection from the environment and predators. These mollusks secrete a material made mostly of calcium carbonate which builds up and hardens to create the shell. As the animal grows, this exoskeleton expands, as well.

Some people think of the shell as the home of the mollusk. This idea is accurate to an extent. The animal does live in its shell. However, the shell is attached to the animal’s body, so the creature can’t leave its “home” unless it dies. These discarded exoskeletons are the empty shells we find on the beach.

Seashells And Chemistry

When we want to know the chemical composition of something, we test it. Doing various simple chemistry experiments and tests can positively identify some substances and rule out others. An easy test for the presence of calcium carbonate uses vinegar.

Place a shell in a glass and add enough vinegar to cover the shell. Observe.

Seashell Chemical Reaction

See the bubbles accumulating on the surface of the shell. These are carbon dioxide bubbles created by the chemical reaction between calcium carbonate, a base, and acetic acid in the vinegar, an acid. The shell is breaking down in this process. If you leave the shell in the vinegar for a few days, the vinegar will visibly break down the shell. The remains of the shell would be thin and brittle.

Geologists use this type of test to determine the presence of limestone in rock. Limestone contains calcium and will react with an acid in the same way.

Try this easy experiment at home to see how the calcium in seashells reacts with acid or test rocks with acid to determine if they contain limestone.

Chemical Reactions with Seashells

Marci is a Christian wife, homeschool mom, science geek, softball coach, ice rink mom and blogger, who needs her morning coffee, hair done and make-up on before attempting any of those things. You can find her blogging at The Homeschool Scientist.

Sign Up
Author profile
Guest Author

This article was written by a Weird, Unsocialized Homeschoolers guest author. See the author's full bio in the body of the post.

Related entries
  • Guest Author
    https://www.weirdunsocializedhomeschoolers.com/author/amsheleo07/
    July 25, 2013
    3 Easy Ways to Fit Music In Your Homeschool
  • Guest Author
    https://www.weirdunsocializedhomeschoolers.com/author/amsheleo07/
    March 20, 2018
    3 Ways Morning Time Can Make You a Happier Homeschool Mom
  • Guest Author
    https://www.weirdunsocializedhomeschoolers.com/author/amsheleo07/
    December 15, 2016
    4 Fun Car and Travel Games
  • Guest Author
    https://www.weirdunsocializedhomeschoolers.com/author/amsheleo07/
    April 25, 2016
    4 Steps to Setting Up a Single Parent Homeschool

Did you like this article? If so, please help by sharing it!

819shares
  • Facebook 271
  • Twitter
  • Email

By Guest Author 6 Comments

About Guest Author

This article was written by a Weird, Unsocialized Homeschoolers guest author. See the author's full bio in the body of the post.

Reader Interactions

Comments

  1. Shelly says

    June 23, 2016 at 7:49 am

    This is awesome! My daughter has a bucketful of shells from when she went to Atlantic City with my brother in the basement. I love that we have something to actually DO with them now. And I had no idea that the shells were attached to their bodies. I knew snail shells were, but I didn’t make the connection.

    Reply
    • Marci@TheHomeschoolScientist says

      June 27, 2016 at 12:06 pm

      Have fun with this! Try it with different colored shells. You can see the color disappearing. So cool.

      Reply
  2. Mother of 3 says

    June 23, 2016 at 11:31 am

    How cool! Pinned to try after our next trip to the beach!

    Reply
    • Marci@TheHomeschoolScientist says

      June 27, 2016 at 12:07 pm

      Yes! You can take some vinegar and try this on your trip. It’s so easy.

      Reply
  3. Erin Vincent says

    July 2, 2016 at 7:55 am

    We probably won’t visit the beach anytime soon, but I’m thinking I could pick up a bag of shells at the craft store and experiment with them! This looks so fun!

    Reply
  4. Laura Barrera says

    December 21, 2018 at 10:19 am

    what are we looking for in the results? If the shell does not break down too much, this is because limestone is present? What conclusions should we draw based on observations?

    Reply

Leave a Reply Cancel reply

Your email address will not be published. Required fields are marked *

Recipe Rating




This site uses Akismet to reduce spam. Learn how your comment data is processed.

Primary Sidebar

Search This Site

  • Contact
  • Advertising
  • Disclosure Policy
  • Terms of Use
  • Privacy Policy
Free Dyslexia Screener
Spelling Rules Posters
World Maps
Litter-Robot

Copyright © 2021 Weird Unsocialized Homeschoolers | All Rights Reserved.
Use of original text or photos without permission is a violation of copyright.
Terms of Use | Privacy Policy | Disclosure Policy

We use cookies to ensure that we give you the best experience on our website. If you continue to use this site we will assume that you are happy with it.OkPrivacy policy