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2. A/B rxn - What happens when an acid and base react with each other?  (a) Write a 1 sentence description  (b) Write a generic equation that represents all acid-base reactions  (c) Write a real example reaction equation.  (posted 4/21)

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2. A/B rxn - What happens when an acid and base react with each other?  (a) Write a 1 sentence description  (b) Write a generic equation that represents all acid-base reactions  (c) Write a real example reaction equation.  (posted 4/21)

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1. When the acid and bases react with each other they will producing the salt. Because when the hydrogen + (H+) cation of the acid combined with OH- ( hydroxide -) is anion of the base to produce water. Which mean the compound of the cation and anion will make a salt. Also it equal to neutralize.
2. HA + B —> HB + A-
3. HF + H2O  —> F- + H3O
Hydrofluoric acid + Water—> Fluoride + Hydronium.

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Phenomenon - Write 5 questions related to the demo reactions of just acids & bases in general.  (posted 4/18)

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Phenomenon - Write 5 questions related to the demo reactions of just acids & bases in general.  (posted 4/18)

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1. Did sodium hydroxide dissolve aluminum?
2. Why reaction of NaOH of can is differently? It about the aluminium or what?
3. Is it possible that the HCl acid is less PH which it will make less reaction or not?
4. If we have high Base like NaOH which means the reaction will more on can?
5. Did the color or type of chemical coating affects to the can or not?

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Phenomenon - Describe the change in volume of the plastic containers for the (a) 1st trial with same sized cups (we did two tests with this condition)  (b) 2nd trial with different sized cups  (c) 3rd trial with different starting volume and different cups  (d) Define Dynamic Equilibrium.  (posted 3/2

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Phenomenon - Describe the change in volume of the plastic containers for the (a) 1st trial with same sized cups (we did two tests with this condition)  (b) 2nd trial with different sized cups  (c) 3rd trial with different starting volume and different cups  (d) Define Dynamic Equilibrium.  (posted 3/2

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1.  The first trial we do it twice. We used same sized  of cups, but difference between amount of water. The reason for this is because speed of running. The speed of running is affect to pour more water in the box and to suck more water.
2. For seconds trial we used different size of cup ( bigger size and smaller size). As you use your nonsense you can guess that the bigger sizes will win. Because we can suck more water. And when the water is to low the bigger will not suck more water in to the cups because the water is not deep enough to suck in.
3. Last one we used different sizes of cup and different amount of water. The bigger sizes of cups has more water, but the smaller size uses less water. But the result is bigger sizes is win because as you know the bigger size has a lot of water to suck in to the cups to pour in the box.
4. when a reaction reaches equilibrium The rate of the forward reaction and reverse reaction equals each other.

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Food Energy - List the types of food tested in order from most energy per gram to least energy per gram based on the experimental data from the class.  Include the actual energies from each item.  (posted 3/21)

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Food Energy - List the types of food tested in order from most energy per gram to least energy per gram based on the experimental data from the class.  Include the actual energies from each item.  (posted 3/21)

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1. Lay is 303.714. Energies is from oil and fat. Which increase metabolism fat to cell to release energy.
2.Popcorn is 250.8
3. Sweet heart candy is 164.455
4.Cornpuff  is 101.1
5. Sun flower seed is 74.27

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Phenomenon - Complete the following tasks regarding the demonstration reaction of Sucrose dehydration.  (a) list your observations from the demo rxn  (b) write the balanced chemical reaction  (c) write a minimum of 5 questions about reaction  (posted 3/3)PE & Graphs - Where is energy stored in a molecule?  What can you change about your graph to make it more accurate.  (posted 3/16)

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Phenomenon - Complete the following tasks regarding the demonstration reaction of Sucrose dehydration.  (a) list your observations from the demo rxn  (b) write the balanced chemical reaction  (c) write a minimum of 5 questions about reaction  (posted 3/3)PE & Graphs - Where is energy stored in a molecule?  What can you change about your graph to make it more accurate.  (posted 3/16)

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A. The observation was the sucrose was break down to water and carbon.
B. C12H22O11 : 12C + 11 H2O
C. 1. How much energy needed to break the bond down to sucrose.
2. How did sucrose turn into water and carbon.
3. Is the process is endothermic or ex other mic.
4. What is the temperature that needed to break down the sucrose.
5. Did the potential energy converted to kinetic energy as a form of heat.
Energy is stored in the bond.
I think I will describe more in the graph.

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Phenomenon - Complete the following tasks regarding the demonstration reaction of Sucrose dehydration.  (a) list your observations from the demo rxn  (b) write the balanced chemical reaction  (c) write a minimum of 5 questions about reaction  (posted 3/3)

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Phenomenon - Complete the following tasks regarding the demonstration reaction of Sucrose dehydration.  (a) list your observations from the demo rxn  (b) write the balanced chemical reaction  (c) write a minimum of 5 questions about reaction  (posted 3/3)

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A. When we put sulfuric acid with sugar it turn slowly to yellow, brown and then black. Before we stir It doesn’t have any liquid and have little small piece like solids. After we put more sucrose it quiet stream carbon dioxide then it increase the size, with bubble in the middle of breaker. And Turn into big solids, with 64 degree.
B.

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Ask question about reaction rate :
1.  Products will form faster if we increase concentration?
2. Why does high concentration increase reaction rate?
3. If we have high temperature why it increase reaction rate?

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KMT & Collision Theory - (a) Write a 2-3 sentence summary to explain why some reactions occur faster than others.  (b) Define "spontaneous" and state its relationship to chemical reactions

* Because the collision are different. Example there have a temperature, concentration, and surface area. It depends on the concentration of the reactant. ( If increase aqueous concentration = Increase collision = increase reaction rate, If decrease of a gases = increases collision = increases reaction rate). the exposed surface area of the reactants it only for the solids ( Increased collision = increased reactant rate, increased surface area = increase collisions = increase reactant rate), also the temperature ( increase collision = increase reactant rate, increase temperature = increase collision = increase reactant rate) and pressure is only for gases  and if there is a catalyst present in the reactions.

* spontaneous is a performed or occurring as a result of a sudden inner impulse or inclination and without premeditation or external stimulus. And it reaction by itself without energy. It like proceed its own.

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A. Write chemical equation for the reaction in phenomena.
: Hydrogen peroxide +    : Water + Oxygen
B. What type of reaction
: I think decomposition because hydrogen peroxide = water + oxygen. ( 2H2 O2 (aq) : 2H2O+ O2 )
C. Describe the reaction in few sentences.
: When they are mixed together the oxygen generally has created bubbles in the soap to produce a toothpaste like a foam.
D. List variables that you think contribute to the speed of this chemical process.
H2O2
KI or Nal
Peroxide
Yeast
Liquid dish
Food color
Water
Large bin
Graduated cylinder

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Test

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We working on project at home and do some lab at school.

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- Working lab

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- Balanced equation
- Plan Lab

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Reactants vs Products - Describe the similarities and differences of the reactants and products from the phenomenon reaction.  See a video of the reaction here.  (posted 1/10)

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Reactants vs Products - Describe the similarities and differences of the reactants and products from the phenomenon reaction.  See a video of the reaction here.  (posted 1/10)

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Both reactants and products are present in the reaction mixture.

Reactants and products can be used to determine the rate of a chemical reaction.

Reactants and products can be atoms, ions or molecules.

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Working on project.

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Working on project

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Talk about project.

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We work on CER slides.

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Working on slides

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I do experience in school.

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Work on new lab

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1. Find 3 videos showing experiments about gas laws that you could use for your own investigation.  (posted 11/19)

* https://www.youtube.com/watch?v=5M8GR6_zIps

* https://www.youtube.com/watch?v=NplVuTrr59U

* https://www.youtube.com/watch?v=56kawZ0M_Pk

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North Carolina School of Science and Mathematics

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We talk about gas law.
And do

Edpuzzle Gas Laws

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The variable is water in the flask, temperature, and pressure.
Constant: it is a red color water, and heat.
Input:  It’s heat.
Output: The gas come out.
What change: The temperature change, and water state( Liquid- Gas ).
Boundary of system: It happened in the flask, and the heat that heat in to containers.

I will explain pictures.
As you can see the picture it has 4 state that I drew. The first state is not things, just water in the containers. Second state is we give the heat to containers, and water evaporates, then on top we put rubber and tube to let the air come out. Third states, we switch on the top of containers to bowl of water, so water sure in from the bowl. So it make heat energy release. And the last state is result. There is no heat and just have water from the bowl.

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1. List 10 question related to phenomenon demonstrated in class

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1. List 10 question related to phenomenon demonstrated in class

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1. What happen if we put a lot of water in containers
2. If the temperature of a fixed amount of a gas is doubled at constant volume, what happens to the pressure?
3. If the shape of containers are affect the result.
4. Does it have anything’s to do with pressure.
5. Does somethings instead a gas to make this happened?
6. Did gases can be expanded without limit.
7. If we have a lot of pressure in containers, the containers can broken?
8. Each flask has the same number of gas molecules.
9. Amount of each tool or material has effect anything’s
10. How does rubber affect to this, if we don’t have to rubber what happened .

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Have a test.

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Today we played quizlet.live in class

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Work on conclusion and CER

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Working on project and discuss.

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Planing project

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Work on group project.

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Forces

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* Intermolecular Forces.
* Work on worksheet HW
* Edpuzzle - Intermolecular Forces

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work on polar molecules.

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Today we learn 4 states of matter.
And draw 4 states of matter.

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Today we work on polar molecule. And we play on phet.colorado and draw so bond dipole, molecular dipole.

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Do project with guys.

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Today we do project

Ionic & Covalent Bonds and plan project.

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Today we draw some Lewis structure

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Today we draw some

Lewis ( practice on Kahoot). And work quizziz Bonding Properties.

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Today we work on qiuz.

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Today we are working on the homework about VSEPR .

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So we learn about :
Valence
Shell
Electron
Pair
Repulsion

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* Count Valence Electrons
*

1. Identify Least electronegative element

2. Draw Lewis structure.

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Third

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Second

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23/09/2021: today we learn about chemical bond, and types of chemical bonds

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23/09/2021: today we learn about chemical bond, and types of chemical bonds

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And draw Bohr model with ions