Search found 18 matches

by Hongtao Yao
Sun Jun 10, 2018 10:39 am
Forum: Naming
Topic: Naming on Final
Replies: 8
Views: 269

Re: Naming on Final

So we just need to write the formula instead of naming as well?
by Hongtao Yao
Sun Jun 10, 2018 10:36 am
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: F orbital
Replies: 6
Views: 224

Re: F orbital

14
by Hongtao Yao
Sun Jun 10, 2018 10:32 am
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7337
Views: 785683

Re: Post All Chemistry Jokes Here

Me after taking Chem 14A
alchemy.jpeg
alchemy.jpeg (7.86 KiB) Viewed 7791 times
by Hongtao Yao
Sun May 20, 2018 6:21 pm
Forum: Ionic & Covalent Bonds
Topic: How to tell which elements will be most likely to form a covalent bond
Replies: 8
Views: 178

Re: How to tell which elements will be most likely to form a covalent bond

usually a metal and nonmetal forms ionic bond, other circumstances usually form covalent bonds
by Hongtao Yao
Sun May 20, 2018 6:19 pm
Forum: Ionic & Covalent Bonds
Topic: Properties of Hydrogen
Replies: 3
Views: 69

Properties of Hydrogen

Although hydrogen is not a metal, does it have any metal-like properties?
by Hongtao Yao
Sun May 20, 2018 12:34 am
Forum: Administrative Questions and Class Announcements
Topic: Midterm Grade online
Replies: 1
Views: 94

Midterm Grade online

Does anyone know when will midterm grade be updated on myUCLA?
by Hongtao Yao
Sun May 13, 2018 4:05 pm
Forum: Ionic & Covalent Bonds
Topic: cation vs anion
Replies: 14
Views: 315

Re: cation vs anion

Cation is positive, which means the atom lost electrons. Anions are negative, which means the atom gained electrons.
by Hongtao Yao
Sun May 13, 2018 4:03 pm
Forum: Ionic & Covalent Bonds
Topic: Metals
Replies: 4
Views: 92

Re: Metals

Its one of the properties for metals to lose electrons more easily than gaining
by Hongtao Yao
Wed May 09, 2018 12:43 am
Forum: Administrative Questions and Class Announcements
Topic: Missed lecture [ENDORSED]
Replies: 1
Views: 124

Missed lecture [ENDORSED]

Hey guys I missed the lecture on Monday, can anyone tell me what did it cover so i can read the corresponding section of the book?
by Hongtao Yao
Sun Apr 29, 2018 9:30 pm
Forum: Photoelectric Effect
Topic: Test 2 final question [ENDORSED]
Replies: 15
Views: 401

Re: Test 2 final question [ENDORSED]

Is there an explanation why the ratio is one to one or it's just a phenomenon that's being observed?
by Hongtao Yao
Sun Apr 29, 2018 9:28 pm
Forum: Administrative Questions and Class Announcements
Topic: Study Guide for Midterm? [ENDORSED]
Replies: 3
Views: 174

Study Guide for Midterm? [ENDORSED]

Will we have a study guide or study sessions offered by TAs for the midterm?
by Hongtao Yao
Sun Apr 22, 2018 11:48 pm
Forum: Administrative Questions and Class Announcements
Topic: Test Time
Replies: 6
Views: 239

Test Time

Just want to know if anyone else felt the time given for test 1 are too short.
by Hongtao Yao
Sun Apr 15, 2018 11:10 pm
Forum: Properties of Light
Topic: Wavelength [ENDORSED]
Replies: 9
Views: 237

Re: Wavelength [ENDORSED]

I believe we dont have to remember all the frequencies, but we probably need to remember the order of the frequencies.
by Hongtao Yao
Sun Apr 15, 2018 11:03 pm
Forum: Accuracy, Precision, Mole, Other Definitions
Topic: Isotopes [ENDORSED]
Replies: 12
Views: 289

Re: Isotopes [ENDORSED]

Elements exist in different forms. While they all have the same amount of protons in one atom, the number of neutrons in them is different. Every kind of variation of the neutron numbers is an isotope.
by Hongtao Yao
Sun Apr 15, 2018 10:58 pm
Forum: Molarity, Solutions, Dilutions
Topic: Molarity [ENDORSED]
Replies: 3
Views: 132

Re: Molarity [ENDORSED]

Not necessarily, it all depends on the volume. Molarity is the raito of the number of moles and the volume of the solution.
by Hongtao Yao
Sun Apr 15, 2018 10:55 pm
Forum: Empirical & Molecular Formulas
Topic: Finding Molecular X
Replies: 9
Views: 254

Re: Finding Molecular X

In the case of the example you mentioned, you need to figure out what will be produced as the result of the reaction just by the properties of the reactant you are given.
by Hongtao Yao
Sun Apr 15, 2018 10:26 pm
Forum: Photoelectric Effect
Topic: Solar Panels
Replies: 1
Views: 43

Solar Panels

Does solar panels generate electricity because of the photoelectric effect or does it work by some other rule?
by Hongtao Yao
Sun Apr 15, 2018 10:18 pm
Forum: Limiting Reactant Calculations
Topic: Different ways of determining limiting reactants
Replies: 2
Views: 124

Re: Different ways of determining limiting reactants

The best way is probably to get the moles of the ingredient and divide them by the coefficient in front of them in the chemical equation, then compare which number is the smallest to determine which is the limiting reactant

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