Acids and Alkalis
by Shelley Frost, Year 8

lemon


car battery
Acids go red
Alkalis blue
Both are corrosive
And not good for you.

Alkali's for cleaning.
Acids are too strong -
Don't keep them
In your mouth for too long.

pH scale will tell you
What it really is
So be really careful
Which one it is.

oven cleaner


corrosive hazard label