Chemistry
What is a chemical equation?
When a chemical reaction occurs, it can be described by an equation. This shows the chemicals that react (called the reactants) on the left-hand side, and the chemicals that they produce (called the products) on the right-hand side. The chemicals can be represented by their names or by their chemical symbols.
Unlike mathematical equations, the two sides are separated by an arrow, that indicates that the reactants form the products and not the other way round.
A large number of chemical equations are more complicated than the simple ones you will see in this section. They are reversible, which means that the reactants react together to form the products, but as soon as the products are formed, they start to react together to reform the reactants!
Reversible equations proceed in both directions at once, with reactants forming products and products forming reactants simultaneously. Eventually, the system settles down and a balance (an equilibrium) is reached, with the reactants and products present in stable concentrations. This does not mean that the reaction stops, merely that it proceeds in both directions at the same rate, so that the concentrations do not change.
Reversible reactions are indicated with a double arrow as shown in the example below:
Ethanoic acid + ethanol ethyl ethanoate + water
What is Molecular Modeling?
Molecular Modeling, is one of the fastest growing fields in science. It may vary from building and visualizing molecules (click image below for a short animation)...
217K Movie !
A Little Learning and a Little Review
Conservation of Mass-Powerpoint
http://www.sciencegeek.net/Chemistry/Powerpoint/Unit4/Unit4_files/frame.htm
Kinetics and Thermodynamics
http://www.sciencegeek.net/Chemistry/Powerpoint/Unit7/Unit7_files/frame.htm
Atomic Structure
http://www.sciencegeek.net/Chemistry/Powerpoint/Unit1/Unit1_files/frame.htm
Interactive Periodic Chart
http://www.periodictable.com/
Students will use the internet to review the periodic table
Worksheet1 Periodic Table Online
Worksheet2 Chemistry Scavenger Hunt
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Interactive Games You may actually learn something from?????
Virtual Lab-Virtlab
http://www.virtlab.com/index.aspx
Kitchen chemistry
http://pbskids.org/zoom/games/kitchenchemistry/
Who wants to be a Millionaire
http://education.jlab.org/million/index.html
Balancing equations
http://education.jlab.org/elementbalancing/question.php?7104456
Elements Match
http://education.jlab.org/elementmatching/matchingpage.html?medium
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Element Quiz Games
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Periodic Table Games
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| Level L - Learning |
Level L - Learning |
| Learn more about how the elements of the periodic table are related to each other by clicking on them. |
Learn the elements of the periodic table by clicking on them. |
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Element Hangman -
Discover which element the computer has picked by guessing the letters in its name!
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Element Crossword Puzzles - Use the clues provided to solve each crossword puzzle! |
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- Calculate the number of protons, neutrons or electrons in an atom based on information from the
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Learn the names and symbols of the elements!
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Match an element's name to its symbol!
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Try this virtual Experiement
Thermodynamics
How chemical reactions happen
| Chemical reactions are processes of transforming one substance to another through changing chemical bonds. The study of chemical reactions is at the core of chemistry. This activity is a series of virtual experiments for studying how chemical reactions happen. We will focus on organic chemical reactions and will not address issues related to biochemical reactions that are mostly mediated by the aqueous environment. Throughout this activity, when we say bonds, we only mean covalent bonds. |
The primary chain-reaction pathways in the H2O reaction. The dashed lines represent paths to the premature chain termination. The solid circles represent electrons, and the open circles represent holes.
Formation of H2O molecules from H2 and O2 molecules: a non-explosive simulation.
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