@SuperHARRYSTYLESLOVE All of the alkali metals have one valance electron that they want to get rid of so that they have a full octet. As you go down the column the atoms get larger and so due to size and the shielding effect the nucleus has a weaker hold on that outer electron. When dropped into water [H2O or H(OH)] K is more reactive than the H and so it replaces it and forms K(OH) and hydrogen gas (H2). The K in K(OH) is an ion with a 1+ charge, therefore it has lost that electron.
@ModTheRocker It only melts (becomes a molten liquid). The appearance of boiling is the hydrogen gas that is being given off as it reacts with the water. Potassium is normally a solid at room temperature, but this reaction produces so much heat that it causes: 1) the potassium to melt and 2) the hydrogen gas to catch on fire. Melting Point: 63.38 C ; Boiling Point: 759 C.
@Fourteen88SoCal Most of it is Lissajous lines of not fully diluted/evenly distributed potassium hydroxide. It does not look as cloudy live as it does on video.
@Fourteen88SoCal Very, it is a strong base, potassium hydroxide. The metal itself is of course water reactive and can react with moisture on skin and in the air.
why dose it react im sooo stressed coz my homework ahhhhhhhhhh
SuperHARRYSTYLESLOVE 4 weeks ago
@SuperHARRYSTYLESLOVE All of the alkali metals have one valance electron that they want to get rid of so that they have a full octet. As you go down the column the atoms get larger and so due to size and the shielding effect the nucleus has a weaker hold on that outer electron. When dropped into water [H2O or H(OH)] K is more reactive than the H and so it replaces it and forms K(OH) and hydrogen gas (H2). The K in K(OH) is an ion with a 1+ charge, therefore it has lost that electron.
mrericsully 4 weeks ago
Ty your videos helped me with my homework :P
Jayram222 1 month ago
does the metal just boil or actually melt
ModTheRocker 3 months ago
@ModTheRocker It only melts (becomes a molten liquid). The appearance of boiling is the hydrogen gas that is being given off as it reacts with the water. Potassium is normally a solid at room temperature, but this reaction produces so much heat that it causes: 1) the potassium to melt and 2) the hydrogen gas to catch on fire. Melting Point: 63.38 C ; Boiling Point: 759 C.
mrericsully 3 months ago
@mrericsully thanks i understand fully now !
ModTheRocker 3 months ago
what's the nasty stuff it leaves behind in the beaker?
Fourteen88SoCal 9 months ago
@Fourteen88SoCal Most of it is Lissajous lines of not fully diluted/evenly distributed potassium hydroxide. It does not look as cloudy live as it does on video.
mrericsully 9 months ago
@mrericsully is it toxic?
Fourteen88SoCal 9 months ago
@Fourteen88SoCal Very, it is a strong base, potassium hydroxide. The metal itself is of course water reactive and can react with moisture on skin and in the air.
mrericsully 9 months ago
That's awesome, you van see the KOH dissolving.
dbc616 2 years ago
Alkali metals are what really got me interested in chemistry in grade nine.
hookabot 2 years ago
sodium is way better, does the big BOOM!
trueskiller 2 years ago
@trueskiller U should google Ceasium. :-)
RazorRabidz 1 year ago