Predicting Products Practice

[iKylaAwesome]

thank you for this video. :) helped me a lot!

[NarutoFan123FIGHT]

@melanieharlan Thanks =)

[NarutoFan123FIGHT]

What about Activity Series?

[melanieharlan]

@NarutoFan123FIGHT This is an introductory video that I made before I taught activity series. If you watch my Predicting Products SR/DR video, I address the activity series there :)

[okayok18]

Why did you put 8 aft sulfur in the second step of the first reaction?

[melanieharlan]

@okayok18 Look about 10 comments down for the answer to that question :)

[TheNextAnstine]

although i think she is a good teacher though

[MiaStives]

i want you as my teacher... we have been doing this all week and this 10 minute video helped me more then the hours she tries to explain it.

[polaskola]

i wish my teacher was as helpful as you are. he teaches it to us like we already know what to do like his AP class.

[MsShoPow]

I wish you were my professor! Thanks a bunch helped me a lot!

[vietkong100]

@melanieharlan. Thanks! I have a chemistry unit test next Tuesday so I have to figure all the reactions out

[vietkong100]

@melanieharlan. And I am a bit lost. How do u know which indicators to switch. For example I have no clue how to do the following ; Ca(OH)2 + H3 PO4 ------>

[melanieharlan]

@vietkong100 Fast forward to 2:30 and I explain how to know what to switch in a double replacement reaction. I also have another video called Predicting products SR/DR lab that specifically addresses double replacement reactions. For your specific question, calcium & hydrogen are your cations, so switch them and you will have water & calcium phosphate.

[vietkong100]

@melanieharlan. Hi there. I missed a couple days of chem

[dogwiskers]

Thanks a bunch. I have a test tomorrow on this exact topic so I feel better now lol.

[DORKASAURx3]

how did you get 8 for sulfur? :)

[melanieharlan]

@DORKASAURx3 Pure sulfur (the stinky yellow powder) is written as S8 instead of just S to indicate that it's actually an 8-membered ring shape instead of individual atoms. Eight sulfurs covalently bonded together is more stable that an individual atom, so S8 is the form of sulfur that occurs in nature.

[mattkisko]

your such a cool teacher, wish i had you



[ayybabii135]

@melanieharlan how do you know their charges? [ex. Ca 2+, Na 1+, Zn 2+, S 2+]

[melanieharlan]

@ayybabii135 you know their charges based on what group the element is in. An element in group 1 is always +1, group 2 is always +2. The transition metals & nonmetals can get a little crazy and for how to find those charges, I recommend watching my "Oxidation Numbers" video.

[prepapple930]

thank you so much, you really helped me understand how to predict the products!

[prepapple930]

thank you so much, you really helped me understand how to predict the products!

[googleboy314]

THANK YOU!!! You helped me so much. I only knew how to predict double replacement. Now I know how to do all of them!! Thanks!!!

[camdad14]

thanks, helped a lot

[VampireKnightZeel]

THANK YOU SSSSSSSSSSSSOOOOOOOOOO MUCH!!!!!

[xKayxAngelx]

Thank you for this! It really helped me a lot. :)

[thrasher956]

no organic? ):

[melanieharlan]

@thrasher956 This is for an introductory chem class, so no organic. Sorry... :)

[rsaxena3]

Thank you for this video, it reallly helped. I'm in a intro to chem class, and this cleared up a lot of stuff.