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マラウイ 海外青年協力隊員 理科教育活動記録 ~30代後半からの~ 

海外青年協力隊員(理科教育)として、マラウイ湖のほとりにある学校で活動中 30代後半から協力隊を目指して応募しました 1年を経た今、一人の教員隊員として異国の地で子供の教育に携われる喜びを感じています

Sodium reacts with water. 12 months after dispatch

英語

I had two classes. One was form 1 chemistry and the other was form 2 chemistry.

I conducted the experiment in order to let the students understand how dangerous it is not to follow instruction.

 

f:id:kawa0318jp:20161013035946j:plain

(The student is conducting the experiment.)

[Form 2 chemistry]
We performed the experiment of sodium reaction with water. If the sodium gets hot enough, the hydrogen jets can ignite and burn. That's what caused the spark that the students saw.

 

I held the ruler in class in order to hit the students if they misbehaved because in this experiment, concentration was very much needed.If they didn't hear instructions well, it would be more dangerous. Focus was important for safety
If the cause of fire was from sodium and the students threw water at it in order to put it out, the fire would be bigger,

 

The boys were more excited than the girls were. They wanted to see the reaction with bigger sodium. When I conducted the experiment, I started using smaller sodium. If the bigger sodium was put inside, the glass would be blow up and explode.

Sodium reacts with water.
When sodium is added to water, the sodium melts to form a ball that moves around on the surface. It fizzes rapidly, and the hydrogen produced may burn with an orange flame before the sodium disappears.

 

◆Sodium react with water◆
When sodium is added to water, the sodium melts to form a ball that moves around on the surface. It fizzes rapidly, and the hydrogen produced may burn with an orange flame before the sodium disappears.