Test Tube essay topic example
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Beet Lab Test Tube
MATERIAL AND METHODS Stability of cell membrane
using pHF or the lab experiment for testing the
stability of beet cell membranes using pH, many
materials were used as follows. Obtaining a beet
we punch out cores, using a cork borer. After
washing the cores we put each one inside a
separate test tube, and added a different pH
solution in each one. After 3 minutes in these
exposure solutions, we took the beet out with a
dissecting needle. Then transferred each beet to
a separate test tube contain...
Fermentation Test Tube
Planning PROBLEM TO BE INVESTIGATED Yeast enzyme
specificity: Specificity of Brewers and Bakers
yeast enzymes to different sugars (being
monosaccharides) HYPOTHESIS I predict Bakers yeast
to have a different enzyme specificity compared to
Brewers yeast where more CO 2 is produced at 37 0
C. BACKGROUND KNOWLEDGE Fermentation is the
breakdown of sugars by bacteria and yeast using a
method of respiration without oxygen (anaerobic
respiration). It involves a culture of yeast and a
solution of sugar,...
England's First Test Tube Baby
England s Test-Tube Baby The first baby to be
conceived outside of it s mother promises to usher
in a new and maybe, a revolutionary era of human
reproduction. In July, Lesley Brown was getting
close to delivery. This was said to be the world s
first test-tube baby at the Oldham and District
General Hospital, 190 miles outside of London. The
infant was created when the egg of the mother was
joined with the father s sperm in a special
culture medium prepared by gynecologist Patrick
Steptoe of Old...
Carbon Dioxide Yeast Dough Experiment
Biology Lab Report Investigating Alcoholic
Fermentation and the Affects of Yeast on Dough
Aim: The aim was simply to investigate whether or
not yeast had any affect on causing dough to rise
when baked and to experiment with alcoholic
fermentation eg. to see if it gave off carbon
dioxide. Introduction: Following a few weeks of
fermentation theory, groups of three to four were
assigned and told to conduct a series of
experiments involving the affects of fermentation.
My group consisted of myself, ...
Test Tube Water Thermometer Wire
Question: What is the solubility curve of KNO 3
Prediction: Draw a sketch to show the shape of the
curve you expect for the solubility of a typical
solid dissolving in water at different
temperatures. Plot solubility on the y-axis and
temperature on the x-axis. Materials: Large test
tube Balance Stirring wire Two-hole stopper to fit
the test tube, with a thermometer inserted into
one hole 400 mL beaker graduated cylinder or
pipette or burette hot plate or Bunsen burner with
ring clamps and wire ...
Test Tube Put Flame Hcl
I Purpose: Observe chemical reactions and ID
reactants and products of the reactions. Classify
the reactions and write balanced Equations. II
Theoretical Background: A chemical reaction is a
what happens to components that causes a physical
change. III Hypothesis: You can determine a
chemical rxn by the physical change that takes
place. IV (A) Equipment: Burner, wood splints,
crucible tongs, micro spatula, test tubes 7, test
tube holder, test tube rack, sandpaper,
evaporating dish, safety goggl...
Zinc And Hydrochloric Acid
Zinc and Hydrochloric-Acid Written By Kahlil
ZioneDate: 02/02/05 Abstract: We observed the
reaction between zinc and hydrochloric acid and
recorded it in a table and learned wether the
percentage of zinc is effected by the amounts of
both substances added to the solution.
Introduction The purpose of this experiment is to
determine if the amount of zinc and hydrochloric
acid will effect the percentage of the zinc in the
out coming solution. We are reacting zinc metal
with hydrochloric acid to pro...
Test Tube Tubes Solution Drops
Problem: How are carbohydrates identified as a
monosaccharide? Hypothesis: I predict that when we
add the Benedict's solution to the different types
of saccharides and then boil it we will most be
able to determine all the information the we need
to accumulate to record data resulting in the
conclusion for the Benedict's solution. I always
plan to see the addition of the Iodine work
wonders in its own way. Both ways will help us
determine factors with the unknown and known
carbohydrates. I also ...
What Are Proteins Food Product
Proteins are a unique compound which contain
certain atoms in a one of a kind structure. To
start proteins are the building blocks that make
animal tissue. Next, proteins are in the organic
compound group. This means that a protein compound
contains carbon as one of its base atoms. To
continue, a protein is not just one structure of
atoms but at least 200. These structures
individually are known as amino acids. Twenty
different kinds of amino acids are known to exist
and each kind of protein ha...
Effects Of Salt On Freezing Point Of Water
Blank 1 Blank ity BlankBlankity Blank Mr. Blank
4/9/02 Effects of Salts on the Freezing Point of
Water In this experiment, you will study the
effect that several solutes have on the Freezing
Point of water. When a solute is dissolved in a
liquid, the temperature at which that liquid
freezes decreases, because the molecules of the
solute become attached to the water molecules,
making it more difficult for the water to form its
crystalline shape and form into ice. This process
is called Freezing P...
Unknown Solution Ions Turns Test
Qualitative Analysis of Cations Introduction: The
purpose of this experiment is to demonstrate the
separation and identification of metal ions based
on the insolubility of certain salts. The
solubility rules should be taken into account. If
a solution dissolves in water, the result contains
both cations and anions. Analyzing different ions
to discover their nature is the main goal of this
experiment. Separation of the cations by testing
the differences in solubility of different metal
salts is d...
Test Tube Water Color Turbidity
Introduction During lab on Monday, April 9, 2002
our class conducted a lab on water chemistry and
pollution. The two bodies of water that were
choose as samples where, the Wall pond and the
HGTC pond. Each group had to test the water for
Temperature, Dissolved Oxygen, Nitrate, Phosphate,
pH, and Turbidity. Only two people where chosen to
test the waters for Coliform bacteria. "Coliform
bacteria are not pathogenic (disease causing)
organisms, and are only mildly infectious. For
this reason these...
Freezing Point Of Naphthalene
Freezing Point of Naphthalene. Purpose To
determine the freezing point of a known substance,
naphthalene II. Materials ring stand gas source
test tube test tube clamps thermometer naphthalene
Bunsen burner goggles hose stopwatch III.
Procedure 1. Assemble the Bunsen burner, attaching
one end of the hose to the burner and the other to
a gas source. 2. Assemble the ring stand so that
a ring clamp is attached to the stand holding the
test tube that will be used in the experiment. 3.
Fill the test ...
Test Tube Substance Litmus Paper
What is in each test-tube? What proof do I have of
this? Test-tube A: Test-tube A had water in it. I
can base this on the fact that it was a neutral,
reacting neither to red or blue litmus paper.
Phenolphthalein also did not react to this
substance. The pH value was 7, neutral, also
adding to the proof that this substance was water,
because water is neutral. The substance was clear
and odorless, and all of these reactions combined
led me to my conclusion of substance A being
water. Test-tube B:...
Test Tube Solution Fescn Scn
Work to be done: By experiments find out how
chemical equilibria works. Chemicals and
apparatus: Two beakers Five test-tubes
Kaliumtiocyanat, KSCN 0. 002 M
Kaliumtiocyanatsolution, KSCN + H 2 O
Dinatriumfosfat, Na 2 HPO 4 0. 002 M Iron (III)
nitratesolution, FeNO 3 0. 2 M
Silvernitratesolution, AgNO 3 Lab: Lab 1 One
test-tubes is filled half of distilled water (A)
and another with kaliumtiocyanatsolution (B).
Both solutions are colorless. Solution (B)
contains SCN-. I add five drops of iron (II...
Paper Chromatography Test Tube
Paper Chromatography Introduction: Paper
chromatography is used to separate and identify
pigments and other molecules from cell extracts
that contain complex mixtures of molecules. In
1903 Michael Tw sett invented this technique. In
1944 Martin and Synge, who went on to win the
Nobel Prize in 1954 for their work, perfected it.
Paper chromatography was used by Melvin Calvin to
separate the order of photosynthesis, and Fred Z
anger to find out how to make insulin by
determining what orders to put ...
Creatinine Test Tube
Experiment showing the determination of Creatinine
concentration in 24-hour urine samples. Aim: The
aim of the practical is to test the following
hypothesis: The amount of creatinine found in a
persons 24-hour urine sample bears a direct
relationship to the body mass of that person.
METHOD: Materials: 1) 5 urine samples of unknown
concentration numbered 1, 5, 6, 7 ad 8. 2) Picric
Acid 3) 0. 75 M Sodium Hydroxide 4) P 1000 Gilson
Pipette 5) 1 cm 3, 5 cm 3 and 10 cm 3 glass
pipettes 6) Vortex Mix...
Melting Point Compound Solvent Test
Determination of Melting Points of Benzoic Acid
and Benzamide and Composition Diagram of Their
Mixtures PURPOSE: The purpose of this experiment
is to determine the melting point of benzoic acid
and benzamide and make a composition diagram for
the mixtures of benzoic acid and benzamide to
determine the eutectic point of the mixtures. The
melting point of the given unknown will be
determined using the melting point apparatus. Pure
chemicals such as benzoic acid and benzamide alone
have a set melti...
Test Tube Equilibrium Potassium Chloride
Experiment 36 Disturbing Equilibrium Aim: To
observe the effect of a change in conditions on a
system at equilibrium and explain the effects
observed through Le Ch^atelier's principle.
Equipment: 5 medium test tubes 1 test-tube rack 1
100-mL beaker 1 250 mL beaker 1 dropper pipet 1
spatula 1 50-mL graduated cylinder 1 white card,
to record Materials: Saturated potassium nitrate
solution, KNO 3 0. 1 M Iron (III) chloride, FeCl 3
0. 1 M Potassium thiocyanate, KSCN Potassium
chloride crystals, KCl ...
Investigating Hard And Soft Water
INTRODUCTION: Water that contains calcium and
magnesium ions is called "hard water" because
calcium and magnesium ions can combine with other
ions and compounds to leave a hard scale on the
surfaces they touch. Hard water may be a
troublesome in household water supplies.
Fortunately, there are simple solutions to hard
water problems. Hard water can be softened by the
removal of metallic ions responsible for the
hardness. This is known as water softening.
Softened water is desirable in the bathtu...
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