Editing Exercise 1: Acids and Bases

By Shobha Nandagopal

Directions: Edit the sentences below for errors. After typing your edited sentence in the box, click on “answer” to see if you are correct.

Sentence 1

acids and bases have characteristic property.

Answer Acids and bases have characteristic properties.

Sentence 2

An acid have a sour taste while a base taste bitter.

Answer An acid has a sour taste while a base tastes bitter.

Sentence 3

Lemon juice which it contains citric acid tastes, sour while, soap which contains bases feels, slippery.

Answer Lemon juice, which contains citric acid, tastes sour while soap, which contains bases, feels slippery.

Sentence 4

If litmus, which is a vegetable dye, is introduced into an acid, it changes color from blue to red.

Answer If litmus, which is a vegetable dye, is introduced into an acid, it changes color from blue to red.

Sentence 5

An alkali too changes the litmus paper from red to blue.

Answer On the other hand, an alkali changes the litmus paper from red to blue.

Sentence 5

Furthermore acids become less acidic when they combine with bases because bases become less alkaline when they combine with acids.

Answer Furthermore, acids become less acidic when they combine with bases whereas bases become less alkaline when they combine with acids.