lesson 3: lab equipment and lab safety. lab glassware includes containers and other materials that...

Lesson 3:Lab Equipment and Lab Safety

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.

There are severalcommonly-used types

of glassware:

BeakersBeakers 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.

Erlenmeyer Flasks

Erlenmeyer Flasks are used to mix and store

liquids.Rubber stoppers can

be used for storage and to prevent spills.

Boiling FlaskThe 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.

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.

Graduated CylindersGraduated 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.

Ceramic LabwareCeramic labware is used for materials

at very high temperatures.

Lab Accessories

A variety of other accessories and equipment will be used during

lab activities.

Key QuestionsIn 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?