CHEM 110L Laboratory Page

CHEM 110L - Experiments 1 and 2 - .pdf downloads
You may download the .pdf file containing the first two experiments in the CHEM 110L lab manual by clicking on the down-arrow symbol near the right margin at the line at the bottom of this page.  You will need to purchase this lab manual from the NYIT Bookstore as soon as possible, and bring it with you to all laboratory class meetings beginning with the second week of the semester.
Please read the directions for these first two lab experiments as soon as possible.  It is especially important that you become thoroughly familiar with the material that deals with significant figures on pages 3 and 4, because you will need to record measurements and perform calculations using the correct number of significant figures throughout the semester.

This page contains links to YouTube videos and other files that your CHEM 110L lab instructor may want to show to the class before the chemistry lab experiment begins.

Exp't #2 - Solubility
In this experiment, you will determine how the solubility of your unknown (expressed in grams of unknown per 100 g of water) varies with the temperature.  These solubility plots are almost always curves such as the following:
Please note that for simplicity, dots on the practice graph that you have drawn on page 9 have been chosen so that the practice solubility "curve" is just a straight line.  Please make sure that the solubility curve that you draw for your unknown in Experiment 2 is an actual curve instead of just a straight line.

Types of Pipets
You may be given one or both of the following types of pipets for use in this experiment.

A volumetric (transfer) pipet is the most accurate pipet that you can use, but it is designed to transfer only one specific volume of solution.  Instructions are provided for:  (1) rinsing the pipet, (2) using the pipet to transfer the desired solution, and (3) cleaning the pipet after use.

Using a volumetric (transfer) pipet

A Mohr (graduated) pipet is the most versatile pipet that you can use, because it can deliver any volume ranging from 0.0 mL to the maximum volume stated on the pipet.  However, because a Mohr pipet is wider than a volumetric pipet, it is not as accurate.  Remember to use only a volumetric pipet if you really need to transfer the liquid very accurately. use.

Using a Mohr (graduated) pipet


Exp't #3a - Density

Introduction - Vernier Caliper Use


Reading Vernier Calipers

Easy Java Simulations - download the .jar file you want to run at the bottom of this page
File marked 841:  easy to use; slider at the top controls the length of the object
File marked 1452:  latest version, excellent fine tuning of vernier scale position
File marked 1017:  most complicated simulation; it has a magnifier


Exp't #4 - Changes and Substances
Elements, Mixtures, and Compounds

Elements, Mixtures, and Compounds

Introduction to Physical and Chemical Changes

Identifying Chemical Changes

Physical and Chemical Changes  (Part 1 of 2)

Physical and Chemical Changes (Part 1 of 2)

Physical and Chemical Changes (Part 2 of 2)

Physical and Chemical Changes - Part 2 (of 2)


Exp't #5 - Percent Composition of Magnesium Oxide

Formation of Magnesium Oxide


Exp't #6 - Formula of a Hydrate

Hydrate Lab Experiment


Exp't #7 - Chemical Reactions of Copper

Chemical Reactions of Copper

Exp't #8b - Specific Heat

Exp't #9 - Chemical Periodicity

Exp't #10 - Determination of the Gas Constant R

Potassium Chlorate and the Gummy Bear


Exp't #11 - Molecular Weight of a Volatile Liquid

Exp't #12 - Colligative Properties

Jan 19, 2014, 6:44 AM
Sep 15, 2013, 2:41 PM
Vernier Caliper (1017).jar
Sep 22, 2014, 6:06 AM
Vernier Caliper (1452).jar
Sep 21, 2014, 8:11 PM
VernierCaliper (841).jar
Sep 22, 2014, 6:06 AM