Lesson 5 - Lab Equipment

What is a beaker?

• A type of metal container

• A cylindrical glass container used in labs for holding, mixing, and heating liquids and solids

• A plastic measuring cup

• A type of test tube

Beakers are used for holding, mixing, and heating ______ and ______ that will not release gases or splatter when stirred or heated.

• liquids, solids

• gases, vapors

• metals, plastics

• powders, crystals

The markings on a beaker provide precise volume measurements.

• True

• False

What is a glass stirring rod used for?

• Measuring temperature

• Manually stirring solutions or guiding liquid when pouring

• Heating solutions

• Filtering solutions

What are magnetic stir bars coated in?

• Glass

• Teflon

• Plastic

• Rubber

Magnetic stir bars are spun by a magnetic stirrer base for ________ mixing.

• hands-free

• manual

• slow

• random

Tags

NGSS.HS-PS3-5

What is a Florence (or boiling) flask designed for?

• Uniform heating, boiling, and ease of swirling

• Measuring precise volumes

• Filtering solutions

• Storing solids

A Florence flask has a round body, long neck, and _________?

• flat bottom

• pointed top

• square base

• curved spout

What is a crucible usually made of?

• Glass

• Porcelain

• Plastic

• Metal

Tags

NGSS.HS-PS2-6

A crucible is used to heat ______ to very high temperatures.

• solids (particularly metals)

• liquids (particularly oils)

• gases (particularly air)

• plastics (particularly polymers)

Tags

NGSS.HS-PS3-4