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| The Chart for Trial 2 |
Saturday, May 16, 2015
Friday, May 15, 2015
Encore! Encore!
It was time to re-conduct the 'magical' reaction with shells and acid! After performing the procedure once again, I noticed that the shells were not as well dissolved as before!!:(
This might have been due to the larger initial mass of the shells. However, the trend in my observations remained the same. The shell with 2M HCl dissolved faster than the rest. It was followed by 1M HCl, Coke, vinegar, and finally, water.
This might have been due to the larger initial mass of the shells. However, the trend in my observations remained the same. The shell with 2M HCl dissolved faster than the rest. It was followed by 1M HCl, Coke, vinegar, and finally, water.
Thursday, May 14, 2015
Trial no. 1!!!!
Today, I started off with my experiment!!! Miss Kulshan had the apparatus ready and I brought 5 seashells and a bottle of Pepsi along. Once I poured out 40ml of each acid into the beakers, I recorded the weight of the 5 shells I used. After that, I recorded the pH of HCl (2M), HCl (1M), Pepsi, water and vinegar. Then, I immersed each shell of similiar mass in the acids. I waited for 15 minutes and voilà! I saw the 'magic' between acids and seashells! The stronger HCl had made the center of the shell literally vanish after a violent reaction The weaker acid had left a few holes in the shell after a vigorous reaction. Pepsi made the center of the shell weak after a decent fizz and vinegar and water didn't affect the shells much. Then, I recorded the shell's masses again.
Tuesday, May 12, 2015
Plan
PLAN-
Once I collect shells of similiar size and shape, I'll immerse five of them into different acids. Sulphuric Acid, Hydrochloric acid, coke and vinegar will be used in the experiment. Before keeping the seashells in the acids, I'll weigh them using a weighing scale. I'll keep the seashells in the acids for 15 minutes. Thier masses will be checked once they are removed from the acids. Thus, I'll be able to deduce that IF the seashells dissolve quicker, THEN the acids they were immersed in were more acidic BECAUSE they had a lower pH.
Hope it works!!!!!!!!!! :)
Once I collect shells of similiar size and shape, I'll immerse five of them into different acids. Sulphuric Acid, Hydrochloric acid, coke and vinegar will be used in the experiment. Before keeping the seashells in the acids, I'll weigh them using a weighing scale. I'll keep the seashells in the acids for 15 minutes. Thier masses will be checked once they are removed from the acids. Thus, I'll be able to deduce that IF the seashells dissolve quicker, THEN the acids they were immersed in were more acidic BECAUSE they had a lower pH.
Hope it works!!!!!!!!!! :)
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