-by changing colour
blue green red =ph scale
.Hydrochloric acid-what is a acid.
A acid is something that eats away at other things (aka) dissolves them.
The ph of a strong acid is around 1.
There are also lots of other acids.
.Sodium hydroxide-what is a base.
A base is something that can neutralise a acid by changing the ph scale.
The ph of a strong base is around 14.
Something that is neutral has a ph scale of around 7.
Step 1.
Add 2 ml (2 cm ish) of NaOH into a test tube. The way i changed the colours was by adding acid a
base and universal indicator.
base and universal indicator.
step 2.
Add 2 drops of Universal indicator.
Step 3.
Add drops of HCI until you reach a neutral ph.
Well done Tyson! What was the reason you could make different colours? what was the reason you could make orange? and blue? and green?
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