Here's some information about alkalis!
- They turn the universal indicator from a shade of green to violet.
- They turn the red litmus paper blue.
- It's pH is above 7.
However, there is an exception of one solution called... AMMONIA!
Ammonia has a pH above 7, however it turns red litmus paper into a shade of purplish-blue and the universal indicator from green to dark green! Here's two images! (: They're for the alkali reactions!!
Isn't it cool!! Another experiment we did shown the colour change of the acid when we continuously added drops of sodium hydroxide to it. Why does this happen? This is because sodium hydroxide is an alkali, so it causes the acid to have a change in pH and become more of an alkali as more drops are added! Here's the image of the different colours!
Okay! That's all folks! Hope you've learnt something! (:
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