Chem 121 Lab - Final Exam: Study Guide (UNR)

Chem 121 Lab - Final Exam: Study Guide
(UNR) Questions And Answers With
Answers


An tApproximation t- tAnswer t- tEvery tmeasurement tmade tin tthe tlaboratory tis treally tan t...

Pipet t- tAnswer t- tA t... tis ta tglass tvessel tcalibrated tto tdeliver ta tprecisely tknown tvalue tof tliquid tat ta tgiven
ttemperature.



(A+B)/2 t- tAnswer t- tThe tarithmetic tmean tof tA tand tB tis t...

Objects tat tRoom tTemperature t- tAnswer t- tIn tthe tlaboratory twe tcan tweigh t...

Volume t- tAnswer t- tDensity tis tdefined tas tmass tper tunit t/ tby t...

False t- tAnswer t- tTrue/False: tThe tnumber tof tsignificant tfigures tis tnot timportant twhen twe trecord tthe
tresults tof ta tmeasurement.



True t- tAnswer t- tTrue/False: t0.1mg tis tequal twith t0.0001g tof tmass.

False t- tAnswer t- tTrue/False: tThe tdensity tof twater tdoes tnot tchange tat tdifferent ttemperatures.

True t- tAnswer t- tTrue/False: tYou tmust tnever tuse tyour tmouth tto tfill ta tpipet.

True t- tAnswer t- tTrue/False: tEquipment taccuracy tis tin tthe tform tof t+/-n t(e.g., t+/-0.2 tDegrees tCelsius tfor ta
tthermometer).



Bunsen tburner t- tAnswer t- tWhat tis tthis?

Utility tclamp t- tAnswer t- tWhat tis tthis?

Test ttube t- tAnswer t- tWhat tis tthis?

Pinchclamp t- tAnswer t- tWhat tis tthis?

Erlenmeyer tflask t- tAnswer t- tWhat tis tthis?

Beaker t- tAnswer t- tWhat tis tthis?

Florence tflask t- tAnswer t- tWhat tis tthis?

Graduated tcylinder t- tAnswer t- tWhat tis tthis?

Weighing tbottle t- tAnswer t- tWhat tis tthis?

Clay ttriangle t- tAnswer t- tWhat tis tthis?

, Medicine tdropper t- tAnswer t- tWhat tis tthis?

Buret t- tAnswer t- tWhat tis tthis?

Volumetric tflask t- tAnswer t- tWhat tis tthis?

Crucible ttongs t- tAnswer t- tWhat tis tthis?

Funnel t- tAnswer t- tWhat tis tthis?

Deflagrating tspoon t- tAnswer t- tWhat tis tthis?

Test ttube tbrush t- tAnswer t- tWhat tis tthis?

Evaporating tdish t- tAnswer t- tWhat tis tthis?

Test ttube tholder t- tAnswer t- tWhat tis tthis?

Pipet t- tAnswer t- tWhat tis tthis?

Wire tGauze t- tAnswer t- tWhat tis tthis?

Ring tstand, tiron tring, tand tdouble tburet tclamp t- tAnswer t- tWhat tis tthis?

Crucible tand tcover t- tAnswer t- tWhat tis tthis?

Triangular tfile t- tAnswer t- tWhat tis tthis?

Stirring trod t- tAnswer t- tWhat tis tthis?

Spatulas t- tAnswer t- tWhat tis tthis?

0.42g t- tAnswer t- t420mg tto tgrams tis?

160,000cm t- tAnswer t- t1.6km tto tcm tis?

1. tAlways twear tgoggles

2. tAlways twear tlong tpants

3. tAlways twear tclose-toed tshoes t- tAnswer t- tWhat tare t3 tcommon tlab tsafety trules?

It twill tburn tthe tskin. tImmediately tnotify tyour tTA. t- tAnswer t- tWhat thappens twhen tHCl t(hydrochloric tacid)
tcomes tin tcontact twith tthe tskin?



Sodium tCarbonate t- tAnswer t- tWhat tis tNa2CO3?

Calcium tCarbonate t- tAnswer t- tWhat tis tCaCO3?

Yes t- tAnswer t- tDoes tNa2CO3 treact twith twater?

No t- tAnswer t- tDoes tCaCO3 treact twith twater?

A tmixture twith tvarying tcomposition, tand tis tnot tuniform tthroughout t- tAnswer t- tWhat tis ta
tHeterogeneous tMixture?