On Thursday, March 3rd, 2016, the students in General Chemistry II completed the
Buffer Lab. The objective of this lab was for the students to understand what a buffer is
and study how a buffer works. A buffer is an aqueous solution consisting of weak aci
Experiment 5A | Thin-Layer Chromatography (TLC)
To become familiar with thin-layer chromatography techniques.
To separate a mixture of three compounds by using thin-layer chromatography.
To determinate which compounds are found in an unknown s
Experiment 9 | Isolation of the Active Ingredient in an Analgesic Drug
Purpose: To demonstrate important techniques learned from Introduction to Organic Laboratory
Technique: A Microscale Approach 4/e
Techniques: extraction, filtration, and melting point.
Experiment 45 | Benzocaine
Purpose: To prepare benzocaine by esterification of paminobenzoic acid with ethanol.
Hazards: Sulfuric acid is corrosive. Exposure to skin can cause
redness, pain, blisters, and serious burns.
Experiment 30 | Preparation of a Soap
Purpose: To prepare a sample of soap and to examine its properties.
Hazards: Sodium hydroxide pellets are caustic. Do not touch the sodium hydroxide,
use a scoop and weigh the pellets rapidly since they tend to draw m
Experiment 20 | Reactivities of Some Alkyl Halides
Purpose: To see the alkyhalides reactivity.
Background: Haloalkanes, also known as alkylhalides are compounds containing
one or more halogens. The halogens found are fluorine, chorine, bromine, and
Experiment 17 | Ethanol from Sucrose
Purpose: To use fractional distillation to find the percent ethanol in the fermented
Whats the difference between absolute and denatured ethanol?
Absolute ethanol consists of pure ethanol and does
Experiment 8 | Acetylsalicylic Acid
Purpose: To synthesize acetylsalicylic acid from salicylic acid by using acetic
anhydride and concentrated phosphoric acid.
Acetylsalicylic Acid (Aspirin)
Hazards: Exercise care in handling phosphoric acid, as
Experiment 5 | Chromatography
Demonstrate solubility and absorption through the process of using permanent
markers and alcohol to create colorful designs (I.e. tie dying).
Explore polarity and diffusion.
Experiment 12A | Extraction of Caffeine from Tea with Methylene
Chloride Ethyl Acetate
To isolate caffeine from tealeaves by extraction.
To determine the weight percentage recovery of caffeine from tea
Writing a condensed structural formula
Writing the IUPAC name of a hydrocarbon given the
structural formula, and vice versa
Explain the processes of how CFCs contribute to
Ions in Aqueous Solution
Ionic Theory of Solutions
CHEMISTS HAVE ALL THE
Using solubility rules.
Writing net ionic equations.
Deciding whether precipitation occurs.
Know the different parts to an atom
Know the 3 important experiments in the development of
the atomic theory and their importance
Writing nuclide symbols
Know the different families and groups in the
and some of 21
Predicting molecular geometries.
Relating dipole moment and molecular geometry.
Applying valence bond theory.
Describing molecular orbital configurations.
Calculating kinetic energy.
Writing thermochemical equations.
Manipulating thermochemical equations.
Calculating the heat of reaction from the stoichiometry.
Relating heat and specific heat.
Calculating H from
Ionic and Covalent
Using Lewis symbols to represent ionic bond formation.
Writing electron configurations of ions.
Using periodic trends to obtain relative ionic radii.
Using electronegativities to obtain relative bond
Know the difference between a hypothesis and
Distinguish between physical and chemical
Using significant figures in calculations
Convert between metric prefixes
Converting from one temp
Calculating the formula weight from a formula.
Calculating the mass of an atom or molecule.
Converting moles of substance to grams and vice versa.
Calculating the number of mol
High Fructose Corn Syrup vs. Sugar
High fructose corn syrup and sugar are about the same,
nutritionally. All contain a combination of fructose and
glucose and they supply the same number of calories. All
sugars are made up of various combinations of basic
1. Calculate the moles of H+ ions in the HCl solution:
mol (H+) = Volume (H+)
x Concentration (H+)
2. Calculate the moles of OH- ions neutralized by the H+ ions in the titration:
= mol (OH-) at the equivalence point
3. Then, calcula
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B <a href=hello.mp3>Hello (Audio File)</a>
A audio files
B supply text descriptions of audio and video files that appear on you web pages
C transform property
Worksheet 10-2 Are There Any Good Domain Names Left?
1. Go to a website that allows domain name registration such as
www.dotearth.com or www.000domains.com. Pick any single word in
the dictionary and try to determine whether it is ava
Name: Maria Lopez
Section: Chapter7 worksheet C
Worksheet 7-3 Public Radio Broadcasting
Listen to a noncommercial or public radio broadcast (a program or
segment from beginning to end), and then answer the following
1. What is the
Name: Maria Lopez Section: Chaprter 7 Date: 10-29-14
Worksheet 7-2 Your Radio Station
Listen with a close ear to any radio station of your choice for a few
days. Briefly answer the following questions regarding the stations
1. Who is
Eight out of 10 Americans now consume some sort of artificial
sweetener. Last year alone the food industry introduced 2,225
reduced-sugar and sugar-free foods, many of them made with
The purpose behind this lab is to examine four different chemicals reactions such as synthesis,
decomposition, single displacement, and double displacement.
Late Nite Labs Software
Part I: Synthe
The purpose behind this lab is to investigate the conductivity of solutions.
Small disposable cups
Purified drinking water
The purpose behind this lab is to visualize the chemical and physical changes of chemical
reactions behind common household products.
Blue Food Coloring