CHM 117 Final Review-Lab Equipment

Explain the use for a watch glass

to cover a beaker, weigh solids, evaporate liquids, and heat small amounts of substances.

Explain the use for a hot plate

used to heat liquids and solutions, replacing open flames for safety

Explain the use for a beaker

mixing, heating, and holding liquids, as well as for approximate volume measurements

Explain the use for a graduated cylinder

to measure the volume of liquids with reasonable accuracy

What is the use for an electronic balance

provide accurate and reliable weight measurements for a wide range of applications

What is the purpose of wire gauze

-to act as a heat diffuser and support for glassware in a lab, protecting it from direct flame while distributing heat evenly

-It is placed on a ring stand between a heat source, like a Bunsen burner, and glassware such as a beaker or flask, providing a stable platform that prevents the glass from breaking due to heat shock

What is the purpose of a bunsen burner 

to produce a single, adjustable, open gas flame for heating, sterilization, and other laboratory tasks

What is the purpose of a test tube

provide a convenient vessel for various scientific procedures, such as performing reactions, collecting samples (like blood), and conducting experiments, all while being transparent for easy observation. 

What is the purpose of an evaporating dish

to separate a non-volatile solid from a solution by evaporating the liquid

What is the purpose of a ring stand

to provide a stable and secure support for other equipment, such as glassware, using a heavy base and vertical rod

What is the purpose of a glass stirring rod 

mix chemicals and liquids, transfer small amounts of liquid, pour liquids without splashing, and initiate crystal forming 

What is the purpose of a erlenmeyer flask

to safely mix, heat, and hold liquids in a laboratory setting

What is the purpose of a Buchner funnel

vacuum filtration to quickly separate solid particles from a liquid

What is the purpose of a cold water bath

to maintain a low and stable temperature for experiments that require cooling, slowing down reactions, or keeping samples at a constant sub-ambient temperature

What is the purpose of a test tube holder

to keep test tubes organized, stable, and upright, which prevents spills, breakages, and contamination

What is the purpose of a spot well plate

performing small-scale chemical reactions, comparing multiple samples simultaneously, and observing reactions without needing test tubes

What is the purpose of a ring 

to support glassware, such as flasks or beakers, or other equipment during heating or other processes

What is the purpose of a spatula

to transfer, mix, scoop, and spread small amounts of solid and semi-solid chemicals

What is the purpose of pH strips?

to quickly and affordably measure the acidity or alkalinity

What is the purpose of a sidearm flask 

to provide an outlet for connecting a vacuum source, enabling processes like vacuum filtration or solvent removal under reduced pressure 

What is the purpose of a hot water bath

to provide a stable and uniform temperature for heating samples, incubating cultures, and performing reactions that require gentle, controlled heat without direct flame exposure

What is the purpose of a dropper

to transfer small, precise amounts of liquid from one container to another

What is the purpose of test tube rack

to hold multiple test tubes upright, providing organization, stability, and safety.