Search found 15 matches
- Fri Dec 08, 2017 2:39 pm
- Forum: Properties & Structures of Inorganic & Organic Acids
- Topic: Acid Strength
- Replies: 5
- Views: 3055
Re: Acid Strength
How can you determine what is a strong acid vs a weak acid?
- Sun Dec 03, 2017 6:50 pm
- Forum: Lewis Acids & Bases
- Topic: Bronsted vs Lewis
- Replies: 6
- Views: 821
Re: Bronsted vs Lewis
In what scenarios do elements use their bronsted definition and when do they use their lewis definition? In other words, are there certain types of reactions that use one of the definitions more often?
- Sun Dec 03, 2017 6:46 pm
- Forum: Calculating pH or pOH for Strong & Weak Acids & Bases
- Topic: pH and pOH
- Replies: 10
- Views: 1423
Re: pH and pOH
Why is it more common to measure the pH of something rather than the pOH?
- Sun Nov 19, 2017 11:32 am
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Lone Pair Repulsion
- Replies: 2
- Views: 371
Lone Pair Repulsion
Why do lone pairs have higher repulsion in a VSPER model?
- Sun Nov 19, 2017 11:28 am
- Forum: Hybridization
- Topic: Energy of Hybrid Orbitals
- Replies: 4
- Views: 1215
Re: Energy of Hybrid Orbitals
Going along with energy of hybrid orbitals, how do they compare to other non hybrid orbitals and why do they occur?
- Sat Nov 04, 2017 4:24 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Angular VS Bent
- Replies: 3
- Views: 740
Re: Angular VS Bent
I agree with the previous responses that they are basically the same thing. Usually when one says angular they will be talking about the bond angle between two atoms and give a specific measurement, while bent is more of just a general statement.
- Sat Nov 04, 2017 4:22 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Trigonal planar vs. Trigonal bipyramidal
- Replies: 4
- Views: 1753
Re: Trigonal planar vs. Trigonal bipyramidal
Trigonal planar is when there is a central atom and 3 bonding pairs, trigonal bipyramidal is when there is a central atom and 5 bonding pairs.
- Sun Oct 29, 2017 10:19 pm
- Forum: Trends in The Periodic Table
- Topic: atomic size
- Replies: 4
- Views: 707
Re: atomic size
The atomic radius of an element in the upper left would be smaller than the atomic radius of an element in the bottom right because its energy level would be very low and thus the electrons would be held very closely to the nucleus compared to the element that has high energy levels.
- Sun Oct 29, 2017 10:14 pm
- Forum: Trends in The Periodic Table
- Topic: Ionization Energy [ENDORSED]
- Replies: 2
- Views: 585
Re: Ionization Energy [ENDORSED]
Usually when you go across the periodic table the ionization energy will increase but when going from N to O this is not the case. This is because when adding another electron into the px orbital the electrons repel against each other due to their similar charges which causes the ionization energy t...
- Sun Oct 22, 2017 2:05 pm
- Forum: Quantum Numbers and The H-Atom
- Topic: quantum numbers [ENDORSED]
- Replies: 5
- Views: 1119
Re: quantum numbers [ENDORSED]
What happens to the quantum number as you move across the row?
- Sun Oct 22, 2017 1:58 pm
- Forum: Properties of Light
- Topic: EM spectrum
- Replies: 6
- Views: 782
Re: EM spectrum
It is not required to know the exact wavelengths of the spectra but I do think it is important you know the general idea of what order the waves go in. For example you should know that infrared wavelengths are longer than visible light wavelengths and that visible light wavelengths are longer than u...
- Sun Oct 15, 2017 5:02 pm
- Forum: Properties of Electrons
- Topic: Energy Level Change
- Replies: 5
- Views: 751
Re: Energy Level Change
I believe it is possible for electrons to drop down to levels other than n=1. If the change in E is not equal to the amount necessary to move it back down to n=1 then it cannot go there. However, n=1 is the most stable state so the electrons are going to want to move down to that level.
- Sun Oct 15, 2017 4:59 pm
- Forum: Properties of Electrons
- Topic: Conversions [ENDORSED]
- Replies: 4
- Views: 960
Re: Conversions [ENDORSED]
On the test, does it matter what units we provide our answers in as long as they are correct?
- Sun Oct 08, 2017 11:14 am
- Forum: SI Units, Unit Conversions
- Topic: Molecules [ENDORSED]
- Replies: 10
- Views: 1383
Re: Molecules [ENDORSED]
A mole is a unit of measure that defines the amount of a chemical substance that contains as many "things", such as molecules or atoms, as there is in 12 grams of carbon-12. The a molecule is one of those "things" that can make up a chemical substance and is the smallest fundamen...
- Sun Oct 08, 2017 11:07 am
- Forum: Limiting Reactant Calculations
- Topic: Percent Yield [ENDORSED]
- Replies: 5
- Views: 6122
Re: Percent Yield [ENDORSED]
Having a high percentage yield is good because that means the product is being created to its full capacity. This is important when performing experiments because chemists want to make sure they are being as accurate as possible and if not all their product is forming then this can cause for wrong m...