Search found 49 matches

by Cassandra_1K
Thu Dec 05, 2019 8:13 pm
Forum: Lewis Acids & Bases
Topic: I am having trouble
Replies: 4
Views: 73

6 A 17

how can you tell whether an oxide is acidic, basic or amphoteric??
by Cassandra_1K
Thu Dec 05, 2019 7:47 pm
Forum: Amphoteric Compounds
Topic: H2O
Replies: 8
Views: 48

Re: H2O

Yes water is both amphoteric and amphiprotic because it reacts with both acids and bases, as well as donates and accepts protons.
by Cassandra_1K
Thu Dec 05, 2019 7:44 pm
Forum: Conjugate Acids & Bases
Topic: Conjugate Acids and Bases
Replies: 6
Views: 62

Re: Conjugate Acids and Bases

Yes there will always be a conjugate acid and conjugate base so long as there is both an acid and a base.
by Cassandra_1K
Thu Dec 05, 2019 7:41 pm
Forum: Bronsted Acids & Bases
Topic: J.7
Replies: 8
Views: 99

Re: J.7

How did you know to out H with Br and K with OH ????
by Cassandra_1K
Thu Dec 05, 2019 7:25 pm
Forum: Naming
Topic: 9C.3D
Replies: 2
Views: 45

Re: 9C.3D

aqua comes before oxalato, therefore it's still written in alphabetical order.
by Cassandra_1K
Thu Dec 05, 2019 7:23 pm
Forum: Naming
Topic: 9C.1 a
Replies: 3
Views: 37

Re: 9C.1 a

You can use either cyano or cyanido, neither is more correct than the other.
by Cassandra_1K
Thu Dec 05, 2019 7:20 pm
Forum: Shape, Structure, Coordination Number, Ligands
Topic: What is this?
Replies: 5
Views: 94

Re: What is this?

For linkage ligands, how would you know in what order to write the compound?
by Cassandra_1K
Thu Dec 05, 2019 7:12 pm
Forum: Lewis Acids & Bases
Topic: 6A.13
Replies: 5
Views: 49

Re: 6A.13

Would F- be a base or an acid being that F alone doesn't fill the valence shell?
by Cassandra_1K
Thu Nov 21, 2019 6:46 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Test 2
Replies: 5
Views: 84

Re: Test 2

The test goes up until pi and sigma bonds from slide 1 in Monday's lecture.
by Cassandra_1K
Thu Nov 21, 2019 6:45 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Lone Pairs
Replies: 8
Views: 103

Re: Lone Pairs

Lone pairs result in repulsion from them, therefore decreasing the bonds angles.
by Cassandra_1K
Thu Nov 21, 2019 6:43 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Lone pairs
Replies: 13
Views: 108

Re: Lone pairs

Only the lone pairs on the central atom account for shape!
by Cassandra_1K
Thu Nov 21, 2019 6:42 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: T-Shaped ??
Replies: 9
Views: 117

Re: T-Shaped ??

would one of the formulas be, AX6E3?
by Cassandra_1K
Thu Nov 21, 2019 6:37 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Octahedral
Replies: 6
Views: 69

Re: Octahedral

You must think about it's shape in a 3-Dimensional form, then you can see how there are 8 different sides in its shape.
by Cassandra_1K
Thu Nov 21, 2019 6:35 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Polar vs. Nonpolar
Replies: 6
Views: 101

Re: Polar vs. Nonpolar

It would be considered polar because of the dipole moment occurring between the central atom and chloride atom. You must take into consideration the differences in electronegativity.
by Cassandra_1K
Thu Nov 21, 2019 6:33 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Test 2
Replies: 7
Views: 129

Re: Test 2

i believe if you specify that it is bent you should be okay, unless stated otherwise
by Cassandra_1K
Thu Nov 21, 2019 6:31 pm
Forum: Hybridization
Topic: hybridization on the test?
Replies: 10
Views: 132

Re: hybridization on the test?

the test is only up until pi and sigma bonds!
by Cassandra_1K
Thu Nov 21, 2019 6:28 pm
Forum: Hybridization
Topic: hybridization
Replies: 11
Views: 89

Re: hybridization

how do you go about selecting a hybridization scheme?
by Cassandra_1K
Thu Nov 21, 2019 6:26 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Test 2
Replies: 14
Views: 167

Re: Test 2

Does anyone have any advice for remembering molecular shape?
by Cassandra_1K
Thu Nov 21, 2019 6:23 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Lewis Structures
Replies: 3
Views: 39

Re: Lewis Structures

what is the difference between orbital and molecular geometry?
by Cassandra_1K
Thu Nov 07, 2019 8:30 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7951
Views: 1360498

Re: Post All Chemistry Jokes Here

What should do you do with a dead Chemist? Barium!
by Cassandra_1K
Thu Nov 07, 2019 8:25 pm
Forum: Administrative Questions and Class Announcements
Topic: What homework to turn in per week
Replies: 7
Views: 88

Re: What homework to turn in per week

How do we keep track of what homework we can and cannot do?
by Cassandra_1K
Thu Nov 07, 2019 8:21 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Midterm
Replies: 6
Views: 102

Re: Midterm

Because of the midterm and there being no class this week, is there any homework due?
by Cassandra_1K
Thu Nov 07, 2019 8:19 pm
Forum: Student Social/Study Group
Topic: Final Jitters
Replies: 118
Views: 31640

Re: Final Jitters

I'm late at responding to this, but I know for this midterm I told myself I knew all the material before going in. I was able to successfully complete a practice exam prior to the official exam. Do some easy problems and just boost that confidence. Controlling your breaths also helps control jitters.
by Cassandra_1K
Thu Oct 31, 2019 9:19 pm
Forum: Sigma & Pi Bonds
Topic: Difference between sigma and pi bonds
Replies: 4
Views: 62

Re: Difference between sigma and pi bonds

What exactly is the relationship between schrodinger's equation, wave functions, and orbitals
by Cassandra_1K
Thu Oct 31, 2019 9:13 pm
Forum: Lewis Structures
Topic: Valence electrons
Replies: 5
Views: 66

Re: Valence electrons

How do you know when anions cannot behave as a lewis base?
by Cassandra_1K
Thu Oct 31, 2019 9:11 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: Losing electrons
Replies: 3
Views: 55

Re: Losing electrons

What happens to when we have more than 1 electron systems?
by Cassandra_1K
Thu Oct 31, 2019 9:08 pm
Forum: Bond Lengths & Energies
Topic: bond lengths
Replies: 10
Views: 161

Re: bond lengths

Can someone please explain and give an example of bond dissociation energy?
by Cassandra_1K
Fri Oct 25, 2019 1:36 am
Forum: Electron Configurations for Multi-Electron Atoms
Topic: Atomic Radius
Replies: 18
Views: 164

Re: Atomic Radius

How do you differentiate between Atomic and Ionic Radius because I know they both increase when going down a group and decrease from left to right, so how are they different?
by Cassandra_1K
Fri Oct 25, 2019 1:32 am
Forum: Electron Configurations for Multi-Electron Atoms
Topic: Electron Configurations
Replies: 5
Views: 66

Re: Electron Configurations

How do we know whether to remove 3d or 4s?
by Cassandra_1K
Fri Oct 25, 2019 1:29 am
Forum: Ionic & Covalent Bonds
Topic: ionization
Replies: 8
Views: 125

Re: ionization

And How does ionization energy vary across a period in an overall way?
by Cassandra_1K
Fri Oct 25, 2019 1:29 am
Forum: Ionic & Covalent Bonds
Topic: ionization
Replies: 8
Views: 125

Re: ionization

And How does ionization energy vary across a period in an overall way?
by Cassandra_1K
Fri Oct 25, 2019 1:27 am
Forum: Ionic & Covalent Bonds
Topic: ionization
Replies: 8
Views: 125

ionization

Why is the second ionization energy of an element always higher??
by Cassandra_1K
Fri Oct 25, 2019 1:25 am
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7951
Views: 1360498

Re: Post All Chemistry Jokes Here

I don't trust atoms, I heard they make up everything...
by Cassandra_1K
Fri Oct 18, 2019 2:11 am
Forum: Administrative Questions and Class Announcements
Topic: Fall19 Week 3 Discussion 1K
Replies: 2
Views: 121

Re: Fall19 Week 3 Discussion 1K

Thank you! Do we need to print it out or is it okay if we just refer to the document in class?
by Cassandra_1K
Fri Oct 18, 2019 2:07 am
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: Orbitals in relation to arrows
Replies: 10
Views: 190

Orbitals in relation to arrows

How do the orbitas relate to the arrows he draws in class and how does he know which way they are moving?
by Cassandra_1K
Fri Oct 18, 2019 2:03 am
Forum: Properties of Light
Topic: Constants and equations
Replies: 4
Views: 48

Constants and equations

Are we meant to remember all the constants like for E=hv?
by Cassandra_1K
Fri Oct 18, 2019 1:59 am
Forum: Properties of Light
Topic: Week 3/4 [ENDORSED]
Replies: 1
Views: 64

Week 3/4 [ENDORSED]

For the next homework assignment week 4, will it be a mixture of week 3 and week 4 material?
by Cassandra_1K
Thu Oct 10, 2019 9:27 pm
Forum: Significant Figures
Topic: Final Answer
Replies: 4
Views: 94

Re: Final Answer

I agree! It is best to leave your answers in powers of 10 in order to assure your answer is most accurate and precise
by Cassandra_1K
Thu Oct 10, 2019 9:24 pm
Forum: Administrative Questions and Class Announcements
Topic: Week 2 Homework Problems [ENDORSED]
Replies: 67
Views: 3276

Re: Week 2 Homework Problems [ENDORSED]

For homework assignment week 3 would we be able to do week 2 homework problems as well or is it just going to be week 3 homework problems?
by Cassandra_1K
Thu Oct 10, 2019 9:21 pm
Forum: Administrative Questions and Class Announcements
Topic: KAREN SUN 5-7PM WORKSHOP - DOWNLAOD WORKSHEETS HERE
Replies: 53
Views: 3254

Re: KAREN SUN 5-7PM WORKSHOP - DOWNLAOD WORKSHEETS HERE

Thank you so much, Is this just for every test or every workshop that you hold?
by Cassandra_1K
Thu Oct 10, 2019 9:19 pm
Forum: Limiting Reactant Calculations
Topic: Showing Work for Limiting Reactant Calculations on Tests [ENDORSED]
Replies: 68
Views: 3226

Re: Showing Work for Limiting Reactant Calculations on Tests [ENDORSED]

For limiting reactants on the test do we have to explain how we know one is a limiting reactant or can we just specify which one?
by Cassandra_1K
Thu Oct 10, 2019 9:17 pm
Forum: Accuracy, Precision, Mole, Other Definitions
Topic: Test 1 [ENDORSED]
Replies: 107
Views: 4846

Re: Test 1 [ENDORSED]

Are there any compounds we need to remember, or equations?
by Cassandra_1K
Thu Oct 10, 2019 9:15 pm
Forum: Limiting Reactant Calculations
Topic: Topics on Upcoming Test [ENDORSED]
Replies: 7
Views: 333

Re: Topics on Upcoming Test [ENDORSED]

Any tips on what to focus on while studying?
by Cassandra_1K
Thu Oct 03, 2019 7:36 pm
Forum: Balancing Chemical Reactions
Topic: Compound names
Replies: 11
Views: 154

Compound names

Are we expected to know the names of compounds for exams? If so which ones?
by Cassandra_1K
Wed Oct 02, 2019 4:24 pm
Forum: Limiting Reactant Calculations
Topic: Topics on Upcoming Test [ENDORSED]
Replies: 7
Views: 333

Re: Topics on Upcoming Test [ENDORSED]

How many questions are on the test itself?
by Cassandra_1K
Wed Oct 02, 2019 4:20 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7951
Views: 1360498

Re: Post All Chemistry Jokes Here

Did you hear the one about cobalt, radon, and yttrium?

It was CoRnY.
by Cassandra_1K
Wed Oct 02, 2019 4:13 pm
Forum: Limiting Reactant Calculations
Topic: M.9
Replies: 5
Views: 127

Re: M.9

I'm not completely sure how to find the ionic equation, but I believe you start off by balancing equations and then separating each element with its individual ionic charge and the number of each ion.
by Cassandra_1K
Tue Oct 01, 2019 3:04 pm
Forum: Limiting Reactant Calculations
Topic: Practice Problem from Online Module
Replies: 2
Views: 66

Practice Problem from Online Module

How can you determine the maximum amount of product that can be produced for any given reactant?

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