Dimensional Analysis
By Jennifer Barankovich
Dimensional analysis is just a fancy name for a method of calculating that
1. uses numbers in the form of fractions.
2. enables us to convert from one type of unit measurement to another.
It is something that y
Isotopes - different forms of the same element.
Different isotopes have different numbers of neutrons.
Chemically, isotopes of the same element behave the
same way.So water (H2O) could have two H-1 or two H-3
atoms
Isotope p+
C-12
C-13
C-14
H-1
H-2
H-3
e-
Periodic Table Basics
Step 1: Complete the card for each element.
_
B
Complete the top section for each element by adding the
elements
atomic number,
name, and
atomic mass.
_
_
Determine the number of protons, neutrons, and electrons
in each element.
P =
FORMULAS
Area
Formula
l*w
cm2, m2
s2 = s * s
cm2, m2
*l*h
cm2, m2
3.14 * r2
cm2, m2
Formula
Units
l*w*h
w
Units
cm3, m3
3.14 * r2 * h
cm3, m3
4/3 * 3.14 * r3
4.2 * r * r * r
cm3, m3
l
s
s
h
l
r
Volume
h
w
l
r
h
r
METRIC NOTES:
THE METRIC SYSTEM: aka International System of Units: (SI)
Why the Metric System?
1. Easy conversions: factors of 10
2. International: used in many countries
3. common standard: water
Metric units are used to measure length, volume, mass, de
Name _ Class _ Date _
Skills Worksheet
Math Skills
Gravitational Potential Energy
After you study each sample problem and solution, work out the practice
problems on a separate sheet of paper. Write your answers in the spaces
provided.
PROBLEM
An automobi
Name _ Class _ Date _
Skills Worksheet
Math Skills
Kinetic Energy
After you study each sample problem and solution, work out the practice problems
on a separate sheet of paper. Write your answers in the spaces provided.
PROBLEM
A 725 kg automobile has a k
TERMS
POSITON: Location of an object in space (x,y,z,)
MOTION:
Occurs when an object changes its position relative to its
surrounding or frame of reference.
DISTANCE: How far it is between two positions.
FRAME OF REFERENCE:
and measured
The background aga
Name _ Class _ Date _
Skills Worksheet
Math Skills
Work
After you study each sample problem and solution, work out the practice
problems on a separate sheet of paper. Write your answers in the spaces
provided.
PROBLEM
A car has run out of gas. Fortunately
Name:
Hour:
Conservation of Mass Lab
PROBLEM: To determine how the mass changes during
a chemical Reaction.
HYPOTHESIS: (Predict how the mass will change).
EXPERIMENT: 1. Put 2 g. of copper and 1 g. of sulfur
into a test tube.
2. Put a balloon over the to
Exothermic Reactions
Exothermic Reaction- reaction that gives off heat.
Activation Energy
Products
s
Releases heat
Feels hot
Bonds form
Release a lot of energy
Endothermic Reactions
Endothermic reaction- reaction that requires heat.
Act. E = energy requir
Ionic Compounds and Chemical Bonds Review
Composition
a. Explains what makes up a molecule
Ex: H2O -> 2 H atoms and 1 O atom
CO2 -> 1 C atom and 2 O atoms
b. write molecular formula when you know composition
Ex: 6 carbon atoms, 12 hydrogen atoms, and 6 ox
Reaction (rxn) Types
I. Synthesis Rxn
-synthesis = combining
A + B -> AB
ex: 2H2 + O2 -> 2H2O
II. Decomposition Rxn
-opposite of synthesis
ex: 2H2O -> 2H2 + O2
AB -> A + B
III. Single Replacement Rxn
SN1
AX + B -> BX + A
ex: CuSO4 + Zn -> ZnSO4 + Cu
IV. D
Name_
Hr._ Date_
PREDICTING AND BALANCING EQUATIONS #2
BALANCE THE FOLLOWING EQUATIONS AND WRITE THE TYPE OF EQUATION AT THE RIGHT SIDE OF THE
PAGE.
1. H2 + 02 -> H2O
2. Zn + HCl -> ZnCl2
_
+ H2
_
3. HgO -> Hg + 02
_
4. H2 + I2 -> HI
_
5. C + CO2 -> CO
_
Experimental Design Notes
Independent variable- the variable the scientist
chooses to change. Also called the manipulated
variable or the TEST variable
Dependent variable- this is what the scientist
measures to determine whether the independent
variable h
Name_
Identifying Parts of a Scientific Experiment: Galileo
1. Problem (a question):
2. Hypothesis (a prediction):
3. Independent Variable (What was deliberately changed?):
4. Constants (What was kept the same?):
5. Dependent Variable (What changes becaus
Name_
Period_
Lab- Penny Drop
Problem: To determine how many drops of water will fit onto the
surface of a penny as compared to the number of drops of isopropyl
alcohol that will fit onto the surface of a penny.
Hypothesis: More drops of _ will fit onto t
Topic 2
Reaction Rates
Summary Notes
Largs Academy
Topic 2 Reaction Rates
Once you have finished this unit you should be able to
1.
Describe how the following affect the rate of a reaction
Particle size
Concentration
Temperature
2.
Give examples of reacti
Name _ Class _ Date _
Skills Worksheet
Math Skills
Acceleration
After you study each sample problem and solution, work out the practice
problems on a separate sheet of paper. Write your answers in the spaces
provided.
PROBLEM
In 1970, Don Big Daddy Garlit