Periodic trends- atomic radius & ionization energy

[eleanorpark]

You did a perfect job explaining the reasons why!

[simondukuamponsah]

IN FACT THIS IS THE MOST UNDERSTANDABLE OF ALL THAT I HAVE
HEARD AND LISTEN TO IN MY LIFE

[TubeRightIn]

Amazing. You are such an amazing instructor. I have an exam coming up and you explain it so much better than my professor.

[caderylands]

I have learned more from your videos today than my professor the entire semester. Thank you.

[millionsnette]

I'm so glad I found this.
Wish I had this when I was in school the first go round.
Well better late than never.
Your teaching style is EXCELLENT!

[carlygarly]

thank you that was so easy to understand! I wish my teacher would do this

[pranjalmhatre]

You have an excellent...teaching skill.U really solved mu douts everytime.Thnx..

[audraarmstrong]

I have watched so many videos on Chemistry and you are by far the most hands on and helpful person I have come across. Thank you!

[victoriahunt]

I was not able to understand these concepts until this video. Thank you so much!:)

[shahdashraf]

OMG that lady is amazing
i really opened a lot of books watched a lot of videos and I swear I didn't understand anything I was upset until I saw this video and I said I will see it and I couldn't believe I understood u are such a life saver plz complete never stop

[jaylee]

Best explanation in youtube. Thank you so much.

[VaJewls]

Simple to some, but difficult concepts explained extremely well for others like myself. I cannot thank you enough!!

[vumanhkien]

loving your voice, your paper slides and such easy-to-understand explanation, thank you so much for your help :D

[jackandmoonpie]

Thank you so much, my teacher made this more confusiong then it needed to be. And you explained this so clearly!

[sithsakaloum]

I really love your explanation. It is very clear and easy to understand

[ric.]

Oh my gosh! love her! she makes so much sense! Thank yoU!

[ryanskater]

you're great, so clear and easy to understand

[LaurenEcho]

Wow Sonya, Thank you so much. You have a great ability to teach and to make a student who made a D in chemistry back in high school really UNDERSTAND this material! Thank you for your help. Teachers can either make or break the subject for students, and I want to thank you for helping me to actually enjoy a subject that i used to hate.

[andrewhernandez]

you are SAVING me for this chemistry midterm!

[anniereilly]

Thank you so much! You are a wonderful teacher, you explain things so easily and simply.