Tag Archives: #comunicationcc

Lab 20C: Acid-Base Titration

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Titration: It is a chemical experiment in which the concentration of one solution is found by adding a little bit of another solution, finding the point at which the reaction ends, and calculating from that.

Core Competency Reflection: I felt all kinds of joy and sorrow while doing the Lab 20C experiment with my friend Peter Han. I felt the emptiness that comes from making mistakes in the experiment, and the happiness and satisfaction when I found the right value. Through this process, I grew more and was able to prepare perfectly for the remaining journey, especially the journey to finish Chemistry 12. In fact, since I had never done a proper chemistry experiment in Korea, this experience was a new stimulus for me. It was a very impressive experience for me to see the color change to pink when the two solutions were mixed and reached the critical point.

Quadratic Equations in Vertex Form

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As you can see in the graph y=x2, the vertex is (0,0). There are no y-intercepts but one x-intercept (0,0). The graph is going up and the axis of symmetry is x=0. In the other graph, y=(x+4)2-2, the vertex is (-4,-2) and the axis of symmetry is x=-4. The graph is going down. In the y=(x+4)2+4 equation, the vertex is (-4,4) and the axis of symmetry is x=-4. In y=(x-4)2, the vertex is (4,0) and the axis of symmetry is x=4. There is a y-intercept (0,16) and x-intercept (4,0). In the last equation y=(x-4)2-3, the vertex is (4,-3) the graph goes down, and the axis of symmetry is x=4. There are no x-intercepts in it.

  1. I represent the same mathematical idea in multiple ways using the vertex, axis of symmetry, x and y intercepts, and determine if graphs go up or down.
  2. Vertex, axis of symmetry, x-intercepts, and y-intercepts. I found those words in class notes the meaning of those words, by my memory.
  3. I tried to make sure my information was as easy as possible. I think the most important way to share information is using simple words and if you can, use simple words. The method that I used is the most comfortable way that I can use. I also added different colours to recognize easily and used small numbers to simplify the equation. Not only equations but also parabolas, I tried to make to avoid overlapping. For these reasons, I made my equations and parabolas as simple as I could.