Activity Introduction

Quick summary: Students make a ‘naked egg’ by submerging an egg in vinegar. The shell dissolves leaving a naked egg encased in its membrane.

These Snappy Science resources have been created to boost science education in primary schools across Australia. Each lesson is designed to support teachers with the scientific knowledge, ideas and resources to stimulate a sense of wonder and curiosity in their students. Many of the big issues that Australian society will face in the future are around technology, energy, resources and climate change. All of these require students to engage with science – but most of all to enjoy science!

Science at Home: These Snappy Science resources can also be used to engage families in fun science and learning for life. You can download a student friendly version of this activity here and you can also check out the Snappy Science Digital Library.

General capabilities: Critical and creative thinking.

Australian Curriculum content description: This activity is relevant to Science Inquiry Skills across all primary year levels of the Australian Curriculum.

Year 1 Science

  • Everyday materials can be physically changed in a variety of ways (ACSSU018)

Year 2 Science

  • Different materials can be combined, including by mixing, for a particular purpose (ACSSU031)

Year 6 Science

  • Changes to materials can be reversible, such as melting, freezing, evaporating; or irreversible, such as burning and rusting (ACSSU095)

Syllabus OutcomesST1-12MW.

Time required: 5 minutes for explaining activity and placing egg in vinegar, 5 minutes to replace vinegar after 24 hours, 10 minutes to observe results and discuss.

Resources required: Eggs, white vinegar, container or bowl that can be covered, fridge, large spoon for scooping eggs.

Safety advice: None.

Keywords: Egg, membrane, vinegar, calcium carbonate.

Cool Australia’s curriculum team continually reviews and refines our resources to be in line with changes to the Australian Curriculum.


Teacher Worksheet

Brief summary:

Students make a ‘naked egg’ by submerging an egg in vinegar. The shell dissolves leaving a naked egg encased in its membrane.

Students can use the Predict, Observe, Explain table on the Student Worksheet to describe and reflect upon this experiment.

For more information about how to conduct this experiment and for more of the science behind what happens and why, watch the following clip:

How To Make Bouncy Egg (

You will need:

  • Eggs
  • White vinegar
  • A container or bowl that can be covered
  • Fridge
  • Large spoon for scooping eggs

What to do:

Step 1. Place your eggs in the container so that they are not touching each other.

Step 2. Add enough vinegar to cover the eggs. Notice that bubbles form on the eggs. Cover the container, put it in the refrigerator, and let the eggs sit in the vinegar for 24 hours.

Step 3. After 24 hours, use a big spoon to scoop the eggs out of the vinegar. You will need to be careful - the eggshell has b

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Student Worksheet

In this experiment you be looking at what happens to an egg in its shell when it is placed in vinegar for 24 to 48 hours.


Explain what you think will happen:


Explain what happened:


Explain why you think this happened:

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