Chemistry boffins needed for Y8 revision... exam tomorrow

[carriemumsnet]

Ok so one of the topics dd1 has to revise is :production of alkalis by reacting metals with water.

Nothing in either her exercise or text book and can't find owt on google either.

Can anyone help?

[carriemumsnet]

ps have told her mnetters know everything:)

[LadySybildeChocolate]

I'm not actually sure that's a 'real' topic. Ds is in year 8, if you react metals with water then you'd get hydrogen gas (ds says, and he's a geek).

[SoupDragon]

Flicking through DS1's Chemistry text book, if you put an alkali metal (sodium, lithium etc into water it produces hydrogen gas and an alkali.

Could it be this?

[creamteas]

Try

[LadySybildeChocolate]

or does she mean this?

[choceyes]

My husband is a secondary science teacher will ask him in a mo after I have finished feeding dd .

[PandaNot]

Soupdragon is right according to DH chemist! Sodium/lithium + water is what she needs to look up.

[DilysPrice]

Don't forget calcium - calcium + 2* water = calcium hydroxide and hydrogen

[BrigitBigKnickers]

Is this of any use? My DD has just done her end of year 8 tests and this helped her immensely

[choceyes]

All they need to know
-for a level four that it produces hydrogenand the 'pop' test
-for a level five word equations for the reaction, the result is always metal hydroxide + hydrogen
-for a level six the symbol equation for the reaction is typical e.g.
Na + H2O -> NaOH + H2

Choceyes husband

[carriemumsnet]

Thanks all

We'd done the metals in water hydrogen thingy and love the vid - but agree we think this is a non topic - hoping it doesn't come up
Thanks for advice and reassurance