Lesson 1: Introduction to Lab Equipment

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Presentation transcript:

Lesson 1: Introduction to Lab Equipment Unit 3: Chemistry Lesson 1: Introduction to Lab Equipment

1:Safety Goggles Must be worn during any lab that has Glass Heat Chemicals During the entire lab – even during cleanup!

2: Equipment for Measuring Liquids Beaker Flask Graduated Cylinder

3: Water Meniscus When water is in a thin tube, usually glass, it does not have a flat surface at the top. Instead, the top is curved, which is referred to as the meniscus. When reading the volume of liquid, you should read from the bottom of the meniscus.

4: Reading a Meniscus The volume of water in the picture to the right should be read as 18 mL – not 18.5 mL.

5: Practice reading the meniscus… What is the volume in each graduated cylinder?

6: Tips for Measuring Liquids Always put the graduated cylinder or beaker on the table. Move your head so that you are looking at the measurement at eye level.

7: IMPORTANT!!! Measuring liquids accurately is essential!!! Otherwise, the experiment may not work.

8: Cleaning Glass Most glass gets broken during cleanup. Turn the water on BEFORE you put the glassware under the faucet. Wet glass is slippery – be careful. If you accidently break glass- do not attempt to clean it up!!! Tell Ms. M immediately and she will clean it up.

Safety Videos http://www.youtube.com/watch?v=-5tLdD- zsPg&NR=1 http://www.youtube.com/watch?v=hnfiS28A NsU