Light Spectrum

The colors are ROYGBIV: Red, Orange, Yellow, Green, Blue, Indigo, and Violet, in the light spectrum. Three types of spectrums are Continuous, Emission, and Absorption. . . 

Taking time to write what we saw with each chemical, as a class we discussed and wondered why it did what it did. The causes of the lights thats we shown and why some werent. We learned these words--->

CONTINUOUS SPECTRA: another name is thermal spectrums, they have ever light and wave. Show all the colors in the rainbow. So all in all, it shows ALL the colors.

EMISSION:  when the light passes through, the energy is lowered or weakened, being able to see little amount of light.

ABSORPTION: some light is absorbed by gas and only some can pass through.

Now we did some experiments and discovered light through different chemicals and this is the results we got------->

After separating mixtures. . .

The Very Next Day!

We used those filter sheets that i was talking about and drew a image on it with colorful markers. After that we poked a hole right in the center and rolled up a piece of paper towel into the hole. Placed the whole thing into a thin flat container full of water. With the rolled paper towel sucking up the water into the filter, it began to move the colors. In the end, the blue color was very easy for the water to move and was all on the ends. However, the green had a difficult time moving with the water. This whole process is called chromatography. Its a chemical separation for substances like ink. In ink. molecules have different characteristics such as size and solubility, this effects the speed of the movement. Soon enough our drawings looked like this---->

Chapter 4 Assessment

Pg 112 :

28.  All matter is composed of atoms which contains protons, neutrons, and electrons in the nucleus

35. the cathode ray

39. The electrons stay confined in the nucleus because they are negative, and the protons are positive which attract. So the electromagnetic force cause them to stay.

40. The tube is filled with low pressured gas so its not like its hectic in their. The particles connect to the opposite charges as the voltage and magnetic force runs.

50. The superscript in the notation represents the mass number and the subscript stands for the atomic number.

51. You know the mass number and atomic number but how do you find out the number of neutrons? Well  if you have those two things, you take the subtract the atomic number to the mass number which will figure out the number of neutrons.

60.  Vanadium (V) protons: 23 electrons: 23----> Manganese (Mn) protons: 25 electrons:25----> Iridium (Ir) protons: 77 electrons: 77----> Sulfur (S) protons:16 electrons: 16

64. Cs- protons & electrons: 55 neutrons: 80

      Co- protons & electrons: 27 neutrons: 32

      Tm- protons & electrons: 69 neutrons: 94

      Zn- protons & electrons: 30 neutrons: 50

65. a: 31 protons & electrons, 33 neutrons
      b. 9 protons & electrons, 14 neutrons
      c. 22 protons & electrons, 26 neutrons
      d 2 protons & electrons, 6 neutrons
68. percent abundance (mass) = atomic mass. .  51.992
72.  
85.  You cannot  pass your hand through an solid object even though atoms are primarily composed of empty space just because they are all connect in place vibrating.

Pulling apart mixtures

In the beginning I made a crazy mixture with my crew (Nika and Tasha)we put sugar,  calcium chloride and marble chips. Stir, stir, stir til its all mixed together and we swabbed mixtures with another group. Not knowing whats in their container i got a magnet trying to pull the iron out, finding out their is none. I could tell their was a bunch of sugar, a little of marbles chips, sand and calcium chloride. Using a wired net, we separated the big chunks with the little sugars and sand which is called filtration. Marbles chips and calcium chloride in one container, sugar and sand in the other. We weighed the sand and calcium chloride. Used water to dissolve the calcium chloride and subtracted the marble with the total amount. Then on to the next container, sugar, sand and we added water. It was like a filter (filtration), a funnel cup with a paper folded in a certain way, we poured the whole mix in and it separated the sugared water and the sand. This took long time but it sure did work. Used math to get the measurements and BOOM separation complete!


This is how it was folded------>

And this is an example of a different type of filter:

2nd day of Chemistry

WOW! was super scared for this class. .  its been pretty chill. I know its gonna get hard but I'm super duper ready. The class seems like its full of awesome kidos.  Im so glad Nika is in my class even though are schedules are exactly the same, like serious, no joke.