Combined Chem:

Ignore 7:53-9:31 on drying gases

Combined Chem:

Ignore 7:02-8:26 on separating funnel

Ignore Rf value & Locating agent for paper chromatography

Summary on techniques

Some questions on separating techniques

Note: For solid particles, the video only mentions that they vibrate. But for us, you need to say both vibrate and ROTATE about their fixed positions.

NOTE: Nuclide notation in the video is (WRONG AGAIN!!!) Please remember that when we write elements in questions, the number on top is the mass number, which is typically the larger number.

For interest only

Aluminium oxide