Chemistry required practicals

What you'll learn

1. 1

   Imagine you're a scientist in a lab. You need to follow a recipe — a method — to make sure your experiment works.

2. 2

   What is a 'method' in a practical?

3. 3

   Let's set up for a titration — the most important practical. Click to add the acid to the burette.

4. 4

   Here's how to do a titration to find the concentration of an acid.

5. 5

   Now you try — read the burette volume. The meniscus is at 24.5 cm³. What's the reading?

6. 6

   What colour change do you see when you reach the endpoint of a titration using phenolphthalein?

7. 7

   Why do you swirl the flask during a titration?