PhET Gas Law Simulation
If the direct link does not work, use Google, and use the search terms Phet Gas properties.
You can download the program on your home computer if you have
Oxidation and Reduction
What happens when electrons are transferred in a chemical reaction?
Silver tarnishes when it comes in contact with sulfur compounds in the air. Copper gets coated in
beautiful green patina as it ages. Metals rust or corrode in
What variables will affect the force of attraction between charged particles?
Coulombic attraction is the attraction between oppositely charged particles. For example, the protons in
the nucleus of an atom have attraction for the
At what point is a reversible reaction completed?
Most of the reactions that we have studied this year have been forward reactionsonce the reactant has
changed into the product it stays that way. We can assume that eventually the reaction
How is the quantity of solute in a saturated solution determined?
When we add salt to a pot of boiling water or sugar to a pitcher of iced tea, we expect that the added
solute will completely dissolve. It requires a large quantity of these
Limiting and Excess Reactants
Is there enough of each chemical reactant to make a desired amount of product?
If a factory runs out of tires while manufacturing cars, production stops. No more cars can be fully built
without ordering more tires. A sim
How can the coefficients in a chemical equation be interpreted?
A balanced chemical equation can tell us the number of reactant and product particles (ions, atoms,
molecules or formula units) that are necessary to conserve mass during a c
Cracking the Periodic Table Code
Why arent the elements listed in alphabetical order?
As charts go, the periodic table is a bit odd. Its not square. Large portions of the table appear to be
missing at the top. Its not organized alphabetically so elem
Strong versus Weak Acids
What makes a strong acid strong?
Acids are substances that surround us in our everyday life. The uses of acids range from providing essential
nutrients for our bodies to dissolving metals. Some acids are safe to handle with o
Types of Measurement in Chemistry
Quantitative- (quantity) use numbers to describe
Qualitative- (quality) use description without numbers
Which do you Think Scientists would prefer
Quantitative- easy check
Easy to agre
Chemical Formulas Using the Metric System
Easier to use because it is
a decimal system
Every conversion is by some power of .
A metric unit has two parts
A prefix and a base unit.
prefix tells you how many times to
divide or multiply by 10.
Naming compounds and writing chemical formulas.
The second word (negative ion) is formed by changing the ending of the element name to
Writing proper Chemical formulas.
* Crisscross Method
Density, Mass and Volume
Which means 1 mL = 1 cm
1 L about 1/4 of a gallon - a quart
1 mL is about 20 drops of water or 1 sugar cube
weight is a
Mass is the
amount of matter.
1gram is defined as the mass of 1 cm3 of water at 4 C.
Moles and Molar Mass
How do you measure how much in Chemistry?
We count chemical pieces in
1 mole is 6.02 x 1023 particles.
(think of it like a very large dozen)
Ex: 1 doz = ? bricks ? pencils
Ex: 1 mol =? bricks ? pencils
Problem Solving with Dimensional Analysis
Identify the unknown
What is the problem asking for
List what is given and the equalities needed to solve the problem.
Ex. 1 dozen = 12
Plan a solution
Equations and steps to solve
Knowledge for knowledges sake. Research to learn how something works. May lead to and
Ex: Research for synthetic rubber 1940s
Research directed to a specific goal or application.
Ex: Silly Putty 1950s
Significant Figures and Significant Digits
Questions with significant figures:
50 is only 1 significant figure
if it really has two, how can I write it?
A zero at the end only counts after the decimal place.
5.0 x 101
now the ze
Writing and Balancing Equation
In a chemical reaction
The atoms are rearranged.
* But the atoms arent created nor destroyed.
( in other words: whatever you start with you end with )
* this is a LAW Law
Single and Double Replacement Reactions
Types of Reactions
There are millions of reactions.
Cant remember them all.
Fall into several categories.
* We will learn 5 basic types
Answers for the Midterm Review
Fall and Winter Semester
Unit 1 Matter
(Temperature, homo/heterogeneous, conservation of matter, elements and
(Significant figs, scientific notation, scientific method, metric s
Honors Atomic Structure Review: Unit 1A
1. The nucleus has a _ charge and contains _ and
2. _ travel around the nucleus and have a _ charge.
3. The atom is mostly _
4. In a neutral atom, what two particles are present in equal quantities?
5. What does t
What are the shape of p sublevels?_dumbell_ What shape are s orbitals?_sphere
Write the electron configuration for Cl.
Write the electron configuration for Fe.
Identify the element:
Alternative Energy Brochure
You are a salesman who is designing a brochure to
handout to politicians. You are promoting the use
of your selected alternative energy source over our
current use of fossil fuels. Consider the following
for your trifold brochu
Thermochemistry Worksheet Energy changes involving phase changes
Sample Problem: How much energy is needed to convert 23.0 grams of ice at -10.0 C into steam at 109C?
When solving problems involving phase changes, it is helpful to
draw a diagram to visual
Use the States of Matter.ppt posted on my e-board and the internet to answer the following
questions. Answer on a piece of loose leaf paper. Answers must be related back to the States of
What is an example of sublimation in
Date _ Period _
Unit 8 Temperature, Heat and Calorimetry
I. Complete the following:
1. The study of heat flow and measurement is called _.
2. _ is the measure of the random motions in a substance.
3. The words calorimetry, calorimeter, and calor
Period _ Date
PROBLEMS: (solve the following problems using the heat equation)
( q = m x C x T )
1. Determine the amount of heat needed to increase the temperature of a 245.3 g sample of
aluminum from 25.5 O C to 78.2
Show all of your work on this page. Round all masses to the nearest tenth. Dont forget
1. Calculate the mass in grams of 2.55 moles of potassium.
2. An experiment calls for 0.375 moles of Al2(SO4)3 to complete a reaction. Ho
GHOSTS OF CHEMISTRY PAST
We will been talking about how our idea of the atom has changed throughout
history. We will be looking at the ideas and experiments of many people but there are
many more involved. You will choose the name of a person who has made