Making hydrogen experiment

In this activity students will extract an alternative fuel, hydrogen, using a chemical reaction.

This is a fun, hands-on chemistry experiment that will also introduce learners to the topic of sustainable energy while teaching them about hydrogen extraction.

This is one of a set of resources developed to aid the teaching of the secondary national curriculum, particularly KS3, supporting the teaching in science (chemistry). It’s part of a series of activities where students investigate the potential of hydrogen fuel cells as a means of energy generation and storage, through practical activities and a group research project. Following on from this activity, students can research and discuss the pros and cons of hydrogen fuel.

Activity: Making hydrogen gas using a chemical reaction

This is a practical activity where students will make hydrogen gas. Step by step instructions are below, and you can download our activity overview for a detailed lesson plan and worksheet for teaching students how to make gas using a chemical reaction. You can also download our printable practical instruction sheet on making hydrogen.

Tools/supplies needed:

• Conical flask (100cm3)
• Balloon
• Safety goggles
• Length of magnesium ribbon (3cm)
• Hydrochloric acid, diluted to 1 mol dm-3

Follow our step-by-step guide on making hydrogen gas using a chemical reaction

1. Carefully place the magnesium ribbon into a conical flask with diluted hydrochloric acid.
2. Place a balloon over the neck of the conical flask.
3. Gently agitate the flask.
4. Observe the balloon inflate as hydrogen is produced.
5. If you trap the hydrogen in the balloon, and tie a knot in it, it should rise (hydrogen
6. is lighter than air).

The engineering context

Hydrogen power is quickly becoming a hot topic of discussion in engineering. Engineers are currently striving to develop efficient methods of producing and storing hydrogen for energy as it can be used to power cities and vehicles (even racing cars, like those used at the 24 hours of Le Mans).

Suggested learning outcomes

Students will be taught that hydrogen can be separated from water. They will also gain an insight into hydrogen as a sustainable alternative fuel source.

Download our activity sheet and other teaching resources

The activity sheet includes teachers’ notes, useful web links, and links (where appropriate) to the national curriculum in each of the four devolved nations; England, Northern Ireland, Scotland and Wales.

All activity sheets and supporting resources are free to download (including videos!), and all the documents are fully editable, so you can tailor them to your students’ and your schools’ needs.

Download our classroom lesson plan and worksheets below.

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