วันพฤหัสบดีที่ 5 มกราคม พ.ศ. 2560

วันอังคารที่ 6 กันยายน พ.ศ. 2559


We allow genetic engineering

 Genetic engineering is the process of add new DNA to an organism which target to add more new traits that can’t be found in that organism to create special characteristics. For instance, plants that generate from genetic engineering might have more resistance to insects.  Some people think that genetic engineering is bad we should ban, while others believe that we should allow genetic engineering. In my point of view, I think genetic engineering contains many benefits.


                There are many benefits of genetic engineering. First, most of diseases can be prevent though isolating the exact gene. Even, infection disease that can be treated with the use of genetic engineering by implanting the genes that are associated with antigen. Secondly, desirable trait can be easily transfer into an organism’s DNA, also this can increase genetic diversity. Nevertheless, genetic engineering have problems about moral issues that, is it right for a person to destroy the law of nature? The process of genetic engineering takes a long time to gather a wide variety of information before attempting the process. Finally, I think we should allow genetic engineering because It give benefits more than bad effects.

วันจันทร์ที่ 5 กันยายน พ.ศ. 2559

We banned nuclear power
Nuclear power is the process of using nuclear reactions to release nuclear energy to generate heat. Nuclear power was first invented by a Physicist, Enrico Fermi. He discovered the potential of nuclear fission since 1934, when he bombarded uranium atoms with neutrons. Some people think that nuclear power should be ban, while others are not. In my viewpoint, I believe that we should be banned nuclear power because it contains much more disadvantage than advantages.


There are lots of benefits that carry out by nuclear power. Firstly, nuclear power stations don't contribute to carbon emission so this is eco-friendliness to our world. Secondly, nuclear power produced a large amount of energy from just a small mass of fuel which is worthwhile to do. However, everything has good side also has many worst side, even nuclear power contains many disadvantages.
 For instance, When nuclear accidents happen, radiation producing particles can spread over a wide area. The radiation can harm body cells which can make human sick and finally caused of death, also will affect the next generation because genetics problem can occur too. Additional, Fukushima accidents, that high number of Japanese were killed by this accidents and have bad impacts toward the development of the country. Lastly, as I mentioned above represent that we should be  banned nuclear power preventing the next accident to generate that might cause the worldwide to be frantic and life of dead people that can't pull back .

วันอังคารที่ 16 สิงหาคม พ.ศ. 2559

Fruit Batteries

Materials
 Fruits or vegetables: lemon, orange, apple, kiwi, grapefruit, potato, sweet potato,
 Metals: copper (penny), nickel (nickel), iron (regular nail), zinc (galvanized nail),
 Paper Towels
 Multimeter


Purpose:
 The purpose of this experiment is to determine the electrical voltage output of
 It is also to find out which fruits give the highest voltage outputs.
 It is also to find out if the separation of the electrodes affects the voltage output.
 It is also to find out the voltages given off by different pairs of electrode materials.
 It is also to examine the voltage outputs when the electrodes are connected in series
 It is also to find the amperage output of different pairs of electrodes.
 It will also examine whether the depth the electrode is inserted into the fruit affects
onion, aluminum, tin (solder), carbon (mechanical pencil lead), wood (dowel), plastic
different combinations of electrodes and fruits.
and in parallel.
either the voltage or amperage outputs.


Procedure:
Roll the fruit a little to make it a little juicier in the inside. Insert one electrode material
into the juicy part of the fruit. Insert a second electrode into the juicy part of the fruit, but
not so the two electrodes touch.






วันอังคารที่ 26 กรกฎาคม พ.ศ. 2559

Why are my fish dying?



1. The bromothymol blue is non-toxic. It turns yellow in the presence of carbon dioxide, carbon

dioxide with water makes formic acid. It turns blue in the presence of oxygen.

2. Be sure to wash the thermometers and other materials.

3. Design an experiment to determine what is killing my fish

4. I want four bottles experimenting.












Electrolysis of Sodium Chloride Solution













procedure
    1. two pencils sharpened at both ends, or two paper clips distilled water.

    2. Fill a petri dish with distilled water.

    3. Add a small amount of salt and stir until dissolved. 

    4. Add enough universal indicator to give a rich green color 

    5. Attach each of the wire alligator clips to one end of each pencil lead. Attach the other ends of

the electrodes to the battery poles, the red wire to the positive pole, the black wire to the

negative pole. Turn the projector on.

    6. As electrolysis progresses, color changes will begin to occur.

    7. Place a niobium magnet in the middle and discuss what happens.






วันพฤหัสบดีที่ 30 มิถุนายน พ.ศ. 2559


Titration

Titration is the method that is used to determine the unknown concentration of an identified analyte.


Method

1. Ensure that the inside burette is clear which allow the solution to run out through the stopcock.

2. Make sure the outside of the burette is clean and dry, and then mount it  to a  ring stand using a burette clamp of the proper size.

3. Fill the burette to above the zero mark, using a graduated cylinder, small beaker, flask or other container. Use a funnel if necessary to prevent spillage.

4. Run some solution through the stopcock to fill the burette tip , making sure there are no air bubbles and that the level of the solution falls to or below the zero mark.

5. Record the starting volume. When complete , subtract the starting volume from the final volume to determine the amount of solution you have added.