Most of today's lesson consists of precipitation reactions.
Ms. K showed us how ionic compounds when put into water, dissolve.
When you have a solution that involves a chemical change in color, heat, odor and gas forming are usually called precipitating reactions. ( double displacement reaction, when two aqueous solutions are mixed ) Chemical reactions are occurring
I think we went over a little bit on net ionic equations and spectator ions.
She also showed how the certain chemicals moving together.
I think it was lead and nitrate ions moving around in the beaker and when the iodide and potassium was added with the lead and nitrate ions, it first moved randomly all around. Then iodide and lead started to form a big cluster of ions. Once it got big enough, the particles started to sink to the bottom. This was the part where you can notice substances floating on the bottom.
Tomorrow we're all going to start on a lab assignment on developing solubility rules. It to see if certain chemicals create a precipitation reaction or not.
I think i can remember certain things being said in today's lesson. I know for sure that my last year chemistry teacher went over this because i have already did this lab before. ( if its the same one I'm thinking about)
Well that's all i can remember from today's class.
Alvina
1 comment:
Great post Alvina. I changed your nitrogen to nitrate ions in your post.
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