In this experiment, we will use an indicator to observe the reaction between acids and bases.

I love organic chemistry classes.

The use of this machine is simple.

In the organic chemistry experiment, we used phthalein as an indicator.

This is an organic vegetable.

This computer can be used by anyone.

He is majoring in chemistry at university.

We conducted a new experiment in science class.

We will conduct a new chemistry experiment tomorrow.

He is an expert in chemistry.