Secondary project briefs (ages 11+)


Bronze Awards are typically completed by students aged 11+. They complete a ten-hour project which is a perfect introduction to STEM project work. Over the course of the project, teams of students design their own investigation, record their findings, and reflect on their learnings. This process gives students a taste of what it is like to be a scientist or engineer in the real-world.


Silver Awards are typically completed by students aged 14+ over thirty hours. Project work at Silver level is designed to stretch your students and enrich their STEM studies. Students direct the project, determining the project’s aim and how they will achieve it. They carry out the project, record and analyse their results and reflect on the project and their learnings. All Silver projects are assessed by CREST assessors via our online platform.


Gold Awards are typically completed by students aged 16+ over seventy hours. Students’ projects are self-directed, longer term and immerse them in real research. At this level, we recommend students work with a mentor from their chosen STEM field of study. All Gold projects are assessed by CREST assessors via our online platform. There are more CREST approved resources that have been developed by our partners and providers specific to your region.


There are more CREST approved resources that have been developed by our partners and providers specific to your region.


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2 years ago

Bath bomb challenge

  • Text
  • Recipe
  • Bombs
  • Recipes
  • Baking
  • Fizz
  • Mould
  • Homemade
  • Observations
  • Laboratory
  • Investigate
Investigate to find the best recipe for home-made bath bombs.  This resource is published under an Attribution - non-commercial - no derivatives 4.0 International creative commons licence (https://creativecommons.org/licenses/by-nc-nd/4.0/). For more information visit our Terms and Conditions (www.crestawards.org/terms-and-conditions).

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Page 1 of 2 Bath bomb challenge In this project, you will make your ow n homemade bat h bomb. You will find out what makes bath bombs fizz and then vary your recipe to try to change how much yours fizzes. Getting Started You’ll need two things for this project: First, you’ll need a recipe for homemade bath bombs. Second, you’ll need a mould to make your bath bomb the right shape. Making the bath bomb: When you’ve got your recipe, you’re ready to make and test your bath bomb. Most of the recipes tell you to leave the bath bomb for one or two days so it sets - you should set it in your mould so it’s the right shape. Testing the bath bomb: Put the bath bomb in some water and write down the following observations: Describe what happens. Fiddling with the fizz: Now you’ve tested your first bath bomb - your prototype - you should make some more. But this time, you should try changing the fizz … Bath bombs fizz because the citric acid reacts with the baking soda. So when you make more bath bombs, change the amounts of baking soda to see what happens. Make sure you conduct a fair test. You will need to keep lots of things the same. They should be made in the same size and shape mould. They should be left to set for the same amount of time. Click to edit project description You should put the bath bombs in the same amount of water. The water should be at the same temperature. You should make the same sort of observations for each one. The results: Write down all your observations in some sort of table. That way it will be easy to compare them. Decide which type of bath bomb was your favourite. Re-write the recipe as a step-by-step illustrated guide. Things to think about How long does it take for the bath bomb to disperse? How much baking soda gave the most fizz? How much baking soda gave the least fizz? Put the different recipes in order of fizziness How much ‘fizz’ is there? How does the water change? Does it change colour? Does it go ‘greasy’? Useful Resources For bath bombs you can often find recipes on the internet, try searching for “homemade bath bomb”. You may also be able to find recipes in books in the library. For the mould you could buy one, recycle something, or make your own.

Bronze level

Ten hour projects recommended for ages 11+. Find out more about this level and how to gain a CREST Award on the Bronze Awards page.


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Bronze

Silver level

Thirty hour projects recommended for ages 14+. Find out more about this level and how to gain a CREST Award on the Silver Award page.


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Silver

Gold level

Seventy hour projects recommended for ages 16+. Find out more about this level and how to gain a CREST Award on the Gold Awards page


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Gold