Difference between revisions of "Alkali"

Revision as of 16:34, 28 September 2018

An alkali is a Metal Hydroxide solution that has a pH more than 7.

Alkalis can be an Irritant, Harmful or Corrosive and should be handled with care.

Alkalis can be weak or strong which depends on the type of alkali and the concentration.

Alkalis turn Litmus paper blue.

Alkalis turn Universal Indicator blue, indigo and purple depending on the strength of the alkali.

Some common Alkalis you should know:

@@ Line 1: / Line 1: @@
-A [[chemical]] that has a [[pH]] more than [[neutral|7]] that is [[dissolved]] in water.
+==Key Stage 3==
+===Meaning===
+An [[alkali]] is a [[Metal Hydroxide]] [[solution]] that has a [[pH]] more than [[neutral|7]].
+===About Alkalis===
+: [[Alkali]]s can be an [[Irritant]], [[Harmful]] or [[Corrosive]] and should be handled with care.
+: [[Alkali]]s can be used to [[Neutralisation|neutralise]] [[acid]]s.
+: [[Alkali]]s can be [[concentrated]] or [[dilute]].
+: [[Alkali]]s can be [[Weak Alkali|weak]] or [[Strong Alkali|strong]] which depends on the type of [[alkali]] and the [[concentration]].
+: [[Alkali]]s turn [[Litmus]] paper blue.
+: [[Alkali]]s turn [[Universal Indicator]] blue, indigo and purple depending on the strength of the [[alkali]].
+Some common [[Alkali]]s you should know:
+*[[Sodium Hydroxide]]
+*[[Potassium Hydroxide]]