Percent Composition of Water in Popcorn
By: Atiya Bright
February 20, 2017
Introduction / Background Research:
A popcorn kernel has a strong outer covering. It acts as a seal. Inside this seal is about 75%
carbohydrate (starch) with sma
1> In chromatographic experiment some substance move up the stationary phase becoz- it depends upon the polarity
of the substance . If a perticular substance is less polar than the eluting solvent then it moves up at very faster rate
Post-Lab: Experiment 5: Popcorn
How does the percentage of water in each sample compare to the expected amount of water
for optimum popping ability?
Popcorn Pop because of the natural moisture present in each kernel. When the internal water is heated,
"Dickens once wrote, 'It was the best of times, it was the worst of times,' and heaven knows that sums
up my life." I was raised in Woodlawn Maryland, in a single mother household with two sisters and a
mean ole dog named snuggles. My house was a small tw
POWER USED AND ABUSED
Power Used and Abused
Community College of Baltimore County
POWER USED AND ABUSED
The Haber process is a widely debated controversy. Fritz Haber was accolated the Nobel Prize
for his creation of the scientifically
October 28, 2016
All Managers and Employees
Rita Nelson, CEO
Guidelines for Scheduling and Conducting Employee Meetings
You know probably better than anyone that traveling through the Los Angeles area for employee
meetings can tak
Homework Assignment # 2
1. Definitions: All definitions on tests are expected to be opportunities for you to show how much you know about
a particular term, not just that you know the terms. Therefore they will be graded with the following criteria: 3
Atoms are the foundation
of our sensations.
They are incredibly small.
A single pebble from the
shoreline contains more
atoms than you could
The number of atoms in a
single pebble far exceeds
LO: Define matter, atoms, and molecules.
Matter - anything that
has mass (sometimes
expressed as weight)
and takes up space.
Different kinds of matter
are related to the
differences between the
Calculation of quantities of substances involved in a chemical
Based on the balanced chemical equation and the mass
and moles relationship.
LO: Restate and apply the law of constant
Joseph Proust (17541826) - elements combine in
fixed proportions to form compounds.
The law of constant compos
How much iron is in a
given amount of iron ore?
LO: Write Lewis structures for elements.
Lewis Structure or Dot Structure
Element symbol surrounded by dots
that represent the valence electrons
of an ato
Chemistry - the study of matter, its transformations, and the
energy changes that accompany those transformations.
Primary difference between a chemist and a biologist, physicist,
geologist, etc. - a chemist thinks o
LO: Express very large and very small numbers using
B is the base
n is the power or exponent
104 = 10 10 10 10 = 10,000
1 = 1 1 1
104 = 10
Two important modelsthe Bohr model and the
quantum-mechanical modelthat propose
explanations for the behavior of atoms.
Explain how electrons exist in atoms and how those
electrons affect the ch
When you drink from a straw, you remove some of
the molecules from inside the straw.
A pressure difference is created between the inside of
the straw and the outside of the straw
Even if t
Introduction to pH,
Measuring Acidity in
Aqueous Solution: pH
The concentrations of H+ or OH- in
solution can vary over a wide range.
scale can be easier to
The pH scale uses a number from 0 to
14 to indicate concentratio