{"page":"\n\n
\n
\n
\n
\n
\n\nVideo\n
\n

\nHydrogels\n

\n
\n
\nGet Free Access for 10 Days!\n
\n
\n
\n
\n
\n
×
\n\n\n
\n\nPublisher:\n\nCurated Video\n\n\n
\n
\nWe use a disposable nappy to examine the superabsorbent properties of hydrogels. We add water to grains of hydrogel and watch them swell before adding salt to see the water escape. Chemistry - Chemical Industries - Learning Points....\nWe use a disposable nappy to examine the superabsorbent properties of hydrogels. We add water to grains of hydrogel and watch them swell before adding salt to see the water escape. Chemistry - Chemical Industries - Learning Points. Hydrogels are the superabsorbent polymers found in babies' nappies. Hydrogels become negatively charged and uncoil to hold water. Salt removes the negative charge from the hydrogel, causing them to recoil and release water. A Twig Experiment Film. Let students experience real experiments in lab conditions anywhere, from setup, method all the way through to analysis and real-world application.\n
\n
\n\n
\n
\n
\n
\n

Resource Details

\n
\n
\n
\n
Curator Rating
\n
\n
\n
\n
\n
\n
Educator Rating
Not yet Rated
\n
\n
\n
\n
\n
Media Length
\n
6:06
\n
\n
\n
\n
\n
Grade
6th - 12th
\n
\n
\n
\n
\n
Subjects
Science
7 more...
\n
\n
\n
\n
\n
Media Type
Instructional Videos
\n
\n
\n
\n
\n
Source:
\n
\nImagine Learning - Twig (middle years+)\n\n
\n
\n
\n
\n
\n
Date
\n
2012
\n
\n
\n
\n
\n\n
Language
English
\n
\n
\n
\n
\n
Audiences
For Teacher Use
2 more...
\n
\n
\n
\n
\n
Usage Permissions
Fine Print: Educational Use
\n
\n
\n
\n
\n
\n

Additional Materials

\n
\n\nSign in or Join Now
\" data-title=\"Get Full Access\" data-container=\"body\" rel=\"popover\" tabindex=\"0\" href=\"/subscription/new\">Video Transcript\n
\n
\n\nSign in or Join Now
\" data-title=\"Get Full Access\" data-container=\"body\" rel=\"popover\" tabindex=\"0\" href=\"/subscription/new\">Video Preview\n
\n
\n
\n

Concepts

\n
\n
polymers, salt, ions, hydrogen, water molecules, molecules, grains, babies, water, absorption, h2o
\n
\n\n\n
\n
\n
\n
\n

Additional Tags

\n
\n
hydrogels, superabsorbent, neutralise, repel, nacl, negative charge, disposable nappies, contact lenses, nappy, polymer, contact, charges, soak, examine, hydrogel, place, made, react, attract, coil
\n
\n\n\n
\n
\n
\n
\n

Classroom Considerations

\n
Best For: Explaining a topic
Video is ad-free
\n
\n
\n

Educator Ratings

\n
\n
\n
\n
\n
\n\nShow resource details\n
\n
\n\" data-title=\"Get Full Access\" data-container=\"body\" rel=\"popover\" tabindex=\"0\" aria-label=\"Play video: Hydrogels\" href=\"/subscription/new\">\"Hydrogels\"\n\n
\n
\n
\n\n\n\n"}