September 24, 2019

[O/A Level Biology / Chemistry] A bubble with a hole in it may seem rather odd, but that is entirely possible by using some clever items you can find around your house. And the result closely imitates the way cell membranes work, by allowing selective nutrients to ente...

September 10, 2019

[S3 Physics: Density] A solid has a definite shape and volume, as is the case with sand. However, it's possible to change the behaviour of sand by inserting pressurised air underneath it, causing it to act like a fluid.

The Particulate Model of Matter depicts solids as...

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