​Hello there! We are the twisted mixtures!
We are Allie, Taryn, Sabrina, and Nat. [:



Notes:
-An element is a pure substance not able to be broken down.
-A compound is a pure substance of 2 or more elements chemically combined (chemical bound).
They can be broken apart chemically.
-A mixture is a combination of 2 or more substances that are not chemically bonded.
They can be physically separated using a magnet, filter, or distillation.


Ionic Compound Notes
  • Charges that are alike repel eachother
  • Charges that are different attract eachother
  • Atoms on the left side form positive ions
  • Atoms on the right side form negative ions
  • An ionic compound needs a positive and negative ion
  • The positive ion will probably be a metal
  • Negative ion will probably be a nonmetal
  • Chlorine atoms have a strong attraction for loose electrons



Web Map
http://www.mywebspiration.com/view/382169a1c45e

Web Map2
http://www.mywebspiration.com/view/379556a11ec5

Lab Questions:
1. Explain how to distinguish between a suspension and a solution.
A suspension has particles floating around that are too big to be dissolved while a
solution is a mixture that is composed of particles from 2 or more substances.


2. Describe a procedure that will allow you to remove zinc oxide from a
suspension of zinc oxide and water.

This process is called filtration. You pour a suspension into a filter and it separates
the zinc oxide from the water. The water drips down while the zinc oxide stays in the filter.


3. Is potassium nitrate an element, compound, or mixture? How can you tell?
A compound because compounds are pure substance composed of 2 or more elements.

4. Describe a procedure that will allow you to remove copper sulfate from a solution
of copper sulfate and water.

This process is called centrifuge. You put the solution into a machine and it separates it.


Chemical Research
~Bromothymol blue is a weak acid in a solution.
~Calcium chloride is a compound composed of calcuim and chloriine. It will disolve in water.
~Sodium bicarbonate is chemical compound. NaHCO3 is a white solid.


Lab Questions:
1. What is a chemical reaction? How is a chemical reaction different from a physical change?A chemical reaction is when one or more substances under goes change to form one or more different substances. A physical change is changing in apperance and size, and the substances identity does not change.2. What are reactants and products?Reactants are the starting materials of a chemical reaction. Products are the substance formed through a chemical reaction.3. What are some observable signs that a chemical reaction is taking place?
A solid precipitate can be formed. Bubbling and fizzing shows a gas being formed. The color will change or the substance may rise. The substances temperature may increase or decrease.
4. Give examples of #2 and #3 from the lab experiment.
A reactant would bromothyol blue and the product would be the solid precipitate and the neutral solution. When you mixed the bromothymol blue, calcium chloride, and the sodium bicarbonate the solution changed color, fizzed, rose, and also a solid precipitate. This shows a chemical reaction occured.


Movie Notes:
-Exothermic reactions are more dangerous than endothermic reactions.
-Rate of reaction is the speed of the reaction. This is determined by the motion of the atoms involved.
-Catalyst lowers the activation energy.
-Catalyst is shown above the arrow.
-When actions occur at a lower energy level more products can occur over a shorter amount of time.
-Limiting reagent is the first reactant to be used up in a chemical reaction.


Chemical Research:
-Sodium Iodide: can cause irritation.
-Don't eat Lead Nitrate: highly poisenous and a danger to your health.