Professor

Johnny Pang

AD
4.2
Overall Ratings
Based on 520 Users
Easiness 3.4 / 5 How easy the class is, 1 being extremely difficult and 5 being easy peasy.
Workload 3.0 / 5 How light the workload is, 1 being extremely heavy and 5 being extremely light.
Clarity 4.2 / 5 How clear the professor is, 1 being extremely unclear and 5 being very clear.
Helpfulness 4.2 / 5 How helpful the professor is, 1 being not helpful at all and 5 being extremely helpful.

Reviews (520)

4 of 60
4 of 60
Add your review...
Feb. 9, 2014
Quarter: N/A
Grade: N/A

class: 30al and 20l
TA's tick off points like crazy due to tight grading standards for both 20l and 30al. also, 30al is 2 labs/week for a total of 6hr/wk. And you will have on average, a prelab and a postlab for each lab meeting, which means double the 20l work. Finally the soil project, which is in groups of 4, is painful. You get 80grams of a mix of mostly sand, 2 organic compounds, and 2 ionic compounds. You have 4 lab meetings to figure your own procedure to identify and quantify the compounds based on what you learned (not really since most groups have crappy procedures that pang will outright criticize when you present). And you will lose points if you dont get within %80 of the true quantities (only the ta knows the true values so you cant really falsify the data). And if you end up using beers law for inorganics, prepare for hours upon hours of data analysis. Still, enjoy the decent equipment since 30bl equipment is a downgrade. Finally, you need to think like an accountant, keep very careful track of multiple due dates and dont show up late; many people go down half a letter grade for forgetting stuff or showing up late. And if anyone wants old labs and notes for 20l and 30al, am selling complete,graded, high end sets *************

Helpful?

0 0 Please log in to provide feedback.
July 5, 2013
Quarter: N/A
Grade: N/A

20L is a hard class, let's get this straight. In order to get good grade, you need to put a lot of work into this class, so expect about 5-6 hours a week to work on the post/pre-labs, and extra 2-3 hours for the writing assignments. Pang also said he wouldn't curve the class, but he gave this extremely hard final that he ended up curving it anyways in the end I believe.
The final had nothing similar to what he gave in the practice one so really, good luck on it. My advice is to go over the slides and understand every single word written on them.
Postlabs and pre-labs, even though they may not be that hard, take some work to understand them thoroughly, which is one thing you should do to prep for the final.
I did all those things and ended up with an A for the class.
Good luck to you all!

P/S: I'm selling all the postlabs/prelabs, course reader as well as all the notes I took in the class( good review for midterms and finals ). Contact me via *************

Helpful?

0 0 Please log in to provide feedback.
Dec. 7, 2011
Quarter: N/A
Grade: N/A

If you want old Chemistry 20L and 30AL labs/notes email me at *************

Helpful?

0 0 Please log in to provide feedback.
March 21, 2014
Quarter: N/A
Grade: N/A

Sending FLAWLESS Lab reports for 30AL. Get full points on all pre-labs, post-labs, and soil project with detailed explanations for all answers.

email: *************

Helpful?

0 0 Please log in to provide feedback.
March 22, 2015
Quarter: N/A
Grade: N/A

Wonderful professor: extremely clear in his lecture and helpful in office hour.

*** Selling 20L lab reports and lecture notes (text **********) ***

Helpful?

0 0 Please log in to provide feedback.
June 21, 2015
Quarter: N/A
Grade: N/A

Selling high-scoring Chemistry 14BL lab reports for really cheap. Contact me at *************. Guaranteed to get you an A in the lab portion of the class :)

Helpful?

0 0 Please log in to provide feedback.
June 6, 2012
Quarter: N/A
Grade: N/A

If anyone needs the 20L lab manual, contact me at *************

Helpful?

0 0 Please log in to provide feedback.
CHEM 30AL
COVID-19 This review was submitted during the COVID-19 pandemic. Your experience may vary.
July 26, 2022
Quarter: Fall 2021
Grade: A

Professor Pang is the best lab professor!! He truly cares about how his students are doing and if you ever need help on anything during the lab he will always step in to help fix it or when you're too far gone on the (godforsaken) soil lab, he'll give you hints on what to do the next time around.
Selling labs and assignments for this class (got perfect scores on every assignment), shoot me an email: *************!

Helpful?

0 0 Please log in to provide feedback.
CHEM 30AL
COVID-19 This review was submitted during the COVID-19 pandemic. Your experience may vary.
Aug. 8, 2021
Quarter: Fall 2020
Grade: N/A

Selling new Molecular Model Set! Email if interested *************

Helpful?

0 0 Please log in to provide feedback.
April 2, 2018
Quarter: Winter 2018
Grade: N/A

selling labs, midterms, review all for $5
text **********

Helpful?

0 1 Please log in to provide feedback.
CHEM 30AL
Quarter: N/A
Grade: N/A
Feb. 9, 2014

class: 30al and 20l
TA's tick off points like crazy due to tight grading standards for both 20l and 30al. also, 30al is 2 labs/week for a total of 6hr/wk. And you will have on average, a prelab and a postlab for each lab meeting, which means double the 20l work. Finally the soil project, which is in groups of 4, is painful. You get 80grams of a mix of mostly sand, 2 organic compounds, and 2 ionic compounds. You have 4 lab meetings to figure your own procedure to identify and quantify the compounds based on what you learned (not really since most groups have crappy procedures that pang will outright criticize when you present). And you will lose points if you dont get within %80 of the true quantities (only the ta knows the true values so you cant really falsify the data). And if you end up using beers law for inorganics, prepare for hours upon hours of data analysis. Still, enjoy the decent equipment since 30bl equipment is a downgrade. Finally, you need to think like an accountant, keep very careful track of multiple due dates and dont show up late; many people go down half a letter grade for forgetting stuff or showing up late. And if anyone wants old labs and notes for 20l and 30al, am selling complete,graded, high end sets *************

Helpful?

0 0 Please log in to provide feedback.
CHEM 20L
Quarter: N/A
Grade: N/A
July 5, 2013

20L is a hard class, let's get this straight. In order to get good grade, you need to put a lot of work into this class, so expect about 5-6 hours a week to work on the post/pre-labs, and extra 2-3 hours for the writing assignments. Pang also said he wouldn't curve the class, but he gave this extremely hard final that he ended up curving it anyways in the end I believe.
The final had nothing similar to what he gave in the practice one so really, good luck on it. My advice is to go over the slides and understand every single word written on them.
Postlabs and pre-labs, even though they may not be that hard, take some work to understand them thoroughly, which is one thing you should do to prep for the final.
I did all those things and ended up with an A for the class.
Good luck to you all!

P/S: I'm selling all the postlabs/prelabs, course reader as well as all the notes I took in the class( good review for midterms and finals ). Contact me via *************

Helpful?

0 0 Please log in to provide feedback.
CHEM 20L
Quarter: N/A
Grade: N/A
Dec. 7, 2011

If you want old Chemistry 20L and 30AL labs/notes email me at *************

Helpful?

0 0 Please log in to provide feedback.
CHEM 30AL
Quarter: N/A
Grade: N/A
March 21, 2014

Sending FLAWLESS Lab reports for 30AL. Get full points on all pre-labs, post-labs, and soil project with detailed explanations for all answers.

email: *************

Helpful?

0 0 Please log in to provide feedback.
CHEM 20L
Quarter: N/A
Grade: N/A
March 22, 2015

Wonderful professor: extremely clear in his lecture and helpful in office hour.

*** Selling 20L lab reports and lecture notes (text **********) ***

Helpful?

0 0 Please log in to provide feedback.
CHEM 14BL
Quarter: N/A
Grade: N/A
June 21, 2015

Selling high-scoring Chemistry 14BL lab reports for really cheap. Contact me at *************. Guaranteed to get you an A in the lab portion of the class :)

Helpful?

0 0 Please log in to provide feedback.
CHEM 20L
Quarter: N/A
Grade: N/A
June 6, 2012

If anyone needs the 20L lab manual, contact me at *************

Helpful?

0 0 Please log in to provide feedback.
CHEM 30AL
COVID-19 This review was submitted during the COVID-19 pandemic. Your experience may vary.
Quarter: Fall 2021
Grade: A
July 26, 2022

Professor Pang is the best lab professor!! He truly cares about how his students are doing and if you ever need help on anything during the lab he will always step in to help fix it or when you're too far gone on the (godforsaken) soil lab, he'll give you hints on what to do the next time around.
Selling labs and assignments for this class (got perfect scores on every assignment), shoot me an email: *************!

Helpful?

0 0 Please log in to provide feedback.
CHEM 30AL
COVID-19 This review was submitted during the COVID-19 pandemic. Your experience may vary.
Quarter: Fall 2020
Grade: N/A
Aug. 8, 2021

Selling new Molecular Model Set! Email if interested *************

Helpful?

0 0 Please log in to provide feedback.
CHEM 14BL
Quarter: Winter 2018
Grade: N/A
April 2, 2018

selling labs, midterms, review all for $5
text **********

Helpful?

0 1 Please log in to provide feedback.
4 of 60
ADS