Laboratory techniques

Laboratory techniques are the techniques of handling the various pieces of apparatus.

Handling of chemicals

Ways to dissolve a solid in a liquid or to mix two liquids in a test tube:

• Shake the test tube gently
• Stir with a glass rod
• Tap the bottom of the test tube with the forefinger
• Pour the contents to and from between two test tubes
• Stopper the test tube and shake

===Heating techniques=== ===Collecting gases=== there are various methods of collecting gases. some are listed below: * Upward and downward delivery * Over water * Gas syringe

Smelling gases

• Never smell a gas directly.
• Always waft a gas towards yourself if it is reasonably safe to smell it.
• Never smell a gas that is toxic or otherwise dangerous.