Science 9

Electric House Project

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Project Questions:

  1. Q: You have three light bulbs.  All have the same intensity when lit. Explain how you can prove to a classmate that they are connected in series by unscrewing one light bulb. Support your answer.A: If it is in a series circuit and one of the light bulb is unscrewed, then the whole circuit will “shut down” or just stop working since the electrons have only one pathway to go through, once its messed with, the whole circuit will just not light up.
  2. Q: You have three light bulbs. All have the same intensity when lit. Explain how you can prove to a classmate that they are connected in parallel by unscrewing one light bulb.

    A: If it is in a parallel circuit and one of the light bulbs are unscrewed the other two will still light up. Since the electrons now have two pathways if one light dies they still have another pathway with two extra lights to go through.

  3. Q: You have three light bulbs. Two are connected in parallel. This parallel combination is connected in series with the third light bulb. Describe the relative intensity of each bulb. Support your answer.

    A: The light bulbs in a parallel circuit will have more intensity because the electrons will first go through them and then will go through the last light bulb at the end.

  4. Q: In question number three, describe the relative intensities of the two remaining lit bulbs if one of the bulbs in parallel was unscrewed. Support your answer.

    A: When the parallel light bulb is unscrewed the electrons will move towards the two remaining light bulbs and      intensify how bright they light up

  5. Q: reflect on the quality of your ability to collaborate during this project. what did you do well? on what could you have improved?

    A: I collaberated well during this project. me and Jessica were able to get our work done on time and were able to have the materials we needed when we needed them. Jessica did most of the wiring and I did most of the actual building. We were able to stay on task and get everything done. I think next time we could split the work a bit better but other than that I think we did great.

 

CORE COMPETENCY SELF – REFLECTION:                                                                                                                  

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ELECTRIC HOUSE AND CIRUCUIT SCHEMATICS:

 

Trends in the Periodic Table

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The periodic table:

  • Is arranged by increasing atomic number. The atomic number tells us how many protons atoms of that element have. In atoms, there are an equal number of protons and electrons, so the atomic number also tells us how many electrons the atoms for that element has.

Metals, metalloids, non-metals:
         

  • Metals are located on the left hand side of the periodic table.
  • Non-metals are located on the right hand side of the periodic table
  • Metals are located on the latter between metals and non-metals.
  • Nonmetals have properties opposite those of the metals. The nonmetals are brittle, not malleable or ductile, poor conductors of both heat and electricity, and tend to gain electronsin chemical reactions. Some nonmetals are liquids.

Families:

  • Families are a vertical column of elements that share
  • Alkali Metals, Alkaline Earth Metals, Halogens and noble gasses are some common families in the periodic table.
  • The vertical columnson the periodic table are called groups or families because of their similar chemical behavior. All the members of a family of elements have the same number of valence electrons and similar chemical properties.
  • The electron arrangement is connected because in each family there is a certain amount of energy shells the atoms will have.

Periods:

  • In each period (horizontal row), the atomic numbers increase from left to right. The periodsare numbered 1 through 7 on the left-hand side of the table. Elements that are in the same period have chemical properties that are not all that similar.
  • All of the elements in a period havethe same number of atomic orbitals.

Ion charges:

  • Chargesthat are negative are called anions. Elements in the same group have the same charge. A group in the periodic table is a term used to represent the vertical columns. The noble gases of the periodic table do not have a charge because they are nonreactive.
  • This is because unpaired valence electrons are unstable and eager to bond with other chemical species. This means that the oxidation states would be the highest in the very middle of the transition metal periods due to the presence of the highest number of unpaired valence electrons.

Reactivity of elements:

  • Caesiumand fluorine. Group I metals are the most reactive metals.
  • They only have one electronin their outer shell which is easy to lose; they get more reactive as you go down the periodic table as the electron is further from the nucleus and shielded by the inner electrons
  • At the top of the noble gasesis helium (He), with a shell that is full with only two electrons, is not reactive.
  • Their outer shells are full means they are quite happy and don’t need to react with other elements. In fact, they rarely combine with other elements.

 

Hydrogen-Element Cube Project

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https://www.youtube.com/watch?v=CU8J0SqlkkE

  • 1) These are the following questions I used: How was hydrogen discovered? Who discovered hydrogen? Who named it? How was hydrogen used?
  • 2)  Some of the digital tools I used to work through my project were: library websites and google.
  • 3)  The process I used to investigate different websites was to research my questions and look at multiple websites to make sure that the answer was true.
  • 4)  I verified and cited the information I found by looking at multiple websites to make sure the answer was true.
  • 5)  The process was fairly good. I think I could have used more websites to make my project easier to understand.