1. Lesson 3: Lab Equipment and Lab Safety

2. Lab glassware includes containers and other materials that are made of glass (duh). Glassware is often used because it is chemical resistant and can be heated without melting.

3. There are several commonly-used types of glassware:

4. Beakers Beakers are used to easily contain, pour, and heat liquids. The marks on the side of the beaker are called graduations. Beakers come in many sizes.

5. Erlenmeyer Flasks Erlenmeyer Flasks are used to mix and store liquids. Rubber stoppers can be used for storage and to prevent spills.

6. Boiling Flask The narrow mouth of a boiling flask helps trap heat inside, while the round shape allows water to boil during heating. These flasks can have a round or a flat bottom.

7. Volumetric Flasks Volumetric Flasks are used to measure and mix a precise amount of liquid. Each size volumetric flask is used for one specific measurement.

8. Graduated Cylinders Graduated Cylinders are used for very precise measurement of liquids. The smaller the graduated cylinder, the more precise the measurement. Use the smallest graduated cylinder possible for the liquid you need to measure.

9. Ceramic Labware Ceramic labware is used for materials at very high temperatures.

10. Lab Accessories A variety of other accessories and equipment will be used during lab activities.

12. Key Questions In your science journal, write a paragraph that answers the following questions: 1.What does lab safety mean to you? 2.Why is it especially important to follow all safety rules in science class? 3.What are some important safety rules to remember when doing science activities?