QA - Test for gases 

Great video for O-Level practical revision! From Jason 4E3

Great. Won't be able to smell the pungent gases now that I have a blocked nose.

got chem p3 tomorrow, this video's a LIFESAVERRR

Thank u so much

Thank you verry much .. ❤️

You did mistake actually when it's said note the limewater is turn from red to blue its actually supposed to be milky and cloudy not red to blue

Why didnot speak?.you must writ the chemical equestion for every reaction.

my chem teacher made me watch this

sir plz speak and help to get more subs