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?

ps have told her mnetters know everything:)

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).

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?

Try

or does she mean this?

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

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

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

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

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

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