Now that we understand bonding, let's rearrange bonds in chemical reactions. This week let's get active and really DO chemistry to explain chemistry.
What happens in a chemical reaction?
Why do we have to balance the equation of a chemical reaction?
Second hour found a nice site to help you quiz yourself on balancing equations. Get yourself ready for that first page of the test we hear so much about at Classic ChemBalancer
We also want to be finding interesting experiments in chemistry. Why are they important and how do they tie in with what we are covering? To help get the ball rolling we can look back at some great discoveries and experiments throughout history in the Science Channel's presentation of 100 Greatest Discoveries: Chemistry.
This weeks contract has you creating your own experiment to demonstrate a chemical reaction or quizzing the class on balancing equations.
18 comments:
If sugar is covalent and not supposed to be a solvent in water, how come it dissolves in water?
In order to balance an equation you must first write out the equation and then try to equal out both sides . Simply writing it down on paper and saying I'm done will not result in a good test grade! Reactant>Product, reactant is entering into the equation and then the product is the end result. You must balance equations because it's the LAW! Seriously! The law of conservation of mass states that the number of atoms must be equal on BOTH sides of the equation!
Is there more than just 3 different bonds that atoms can form?
what chemicals are asid
What is the Chemical name for cyalume?
if there is a element like Al2O3 ( aluminum oxide ) is it possible to put a 2 next to O3 or do u have to put the 2 by the Al?
sugar disolves because it is slightly polar. Water is polar. so sugar becomes incased in a cage of water.
Why do chemicals react in certain ways to form either an exothermic reaction (releasing heat) or and endothermic reaction (temp. goes down)?
WHy do we have to use catilac converters in cars?
Taylor,
energy is converted to or from bond energy to or from heat or light.
However, Delaney,
the law of conservation of mass is only a restatement of the law of conservation of energy, according to the theory of relativity. This means that if the theory that particles smaller than quarks or bosons exist, quarks may become bosons, or the inverse, which means that mass could become energy at any point. so the real law should be "the law of conservation of stuff", meaning that everything always becomes something else. any questions?
Why does adding salt to water make its boiling point higher yet it boils faster?
Jake,
Adding salt to the water makes it so there is more "stuff" to heat up. so it heats slower, or as Zach said in class, the energy waves have to bounce off the salt where in water they can just go straght.
Why does the boiling point of water rise when you add salt or noodles to it?
what is the difference between acids and bases.
who do things dissolve?
how do thing dissolve?
How can you tell if a substance is a base?
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