Learn about acid/base reactions as sodium hydroxide reacts with gas in the air to produce a solution that appears to disappear!
A blue liquid is made. This liquid is tested on a white page, it leaves a blue ink spot. In a few seconds, the blue spot disappears.
This practical is part of our Classic chemistry experiments collection.
2020-07-15T13:34:00Z
In this escape room article, students explore colour change reactions to reveal hidden codes
2020-07-01T08:36:00Z
Are chemistry learning applications really worthwhile?
2020-06-24T09:05:00Z
From zooming in on chemical phenomena to explaining marking schemes, try these teacher-tested approaches
2020-09-17T11:28:00Z
A lesson presentation with activities for your 11–14 students on polymers and their properties
Use your smartphone to measure changes in concentration across different juice drinks at home or in the classroom. Includes a video aimed at learners, kit list, instruction and explanation.
2020-09-14T10:48:00Z
Explore polymers and redox via food wrap innovations with this activity for 11–16 students
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