Search found 25 matches

by Veronica Lu 3L
Sun Nov 17, 2019 9:22 pm
Forum: Dipole Moments
Topic: Hydrogen bonds
Replies: 17
Views: 40

Re: Hydrogen bonds

hydrogen bonds occur when hydrogen bonds with the electronegative elements F, O, N
by Veronica Lu 3L
Sun Nov 17, 2019 9:20 pm
Forum: Resonance Structures
Topic: Resonance Structures
Replies: 17
Views: 53

Re: Resonance Structures

resonance structures are lewis structures that are essentially all the same but have double/triple bonds at different locations
by Veronica Lu 3L
Sun Nov 17, 2019 9:20 pm
Forum: Resonance Structures
Topic: Formal Charge Question
Replies: 13
Views: 48

Re: Formal Charge Question

they need to all add up and equal the overall charge
by Veronica Lu 3L
Sun Nov 17, 2019 9:18 pm
Forum: Bond Lengths & Energies
Topic: Electron Density
Replies: 10
Views: 20

Re: Electron Density

Lone pairs are indeed regions of electron density as they alter the shapes of molecules
by Veronica Lu 3L
Sun Nov 17, 2019 9:17 pm
Forum: Bond Lengths & Energies
Topic: Shorter bond lengths
Replies: 12
Views: 48

Re: Shorter bond lengths

double bonds are shorter since the bonds are stronger and pull them closer together
by Veronica Lu 3L
Sun Nov 03, 2019 9:23 pm
Forum: Formal Charge and Oxidation Numbers
Topic: Stability
Replies: 9
Views: 48

Re: Stability

the formal charge should be zero (or close to it) in order for the octet to be complete and create stability.
by Veronica Lu 3L
Sun Nov 03, 2019 9:22 pm
Forum: Formal Charge and Oxidation Numbers
Topic: Minimize formal charge of whole molecule?
Replies: 7
Views: 29

Re: Minimize formal charge of whole molecule?

ideally, the atoms want to be in their complete octet state where they are the most stable, thus each formal charge should be as close to zero as possible.
by Veronica Lu 3L
Sun Nov 03, 2019 9:17 pm
Forum: Electronegativity
Topic: What is isoelectronic?
Replies: 13
Views: 49

Re: What is isoelectronic?

isoelectronic refers to the situation in which there the number of electrons are equal
by Veronica Lu 3L
Sun Nov 03, 2019 9:16 pm
Forum: Electronegativity
Topic: Noble Gases and Electronegativity
Replies: 3
Views: 18

Re: Noble Gases and Electronegativity

noble gases have no electronegativity since they already have complete octets.
by Veronica Lu 3L
Sun Nov 03, 2019 9:15 pm
Forum: Electronegativity
Topic: Electronegativity
Replies: 9
Views: 40

Re: Electronegativity

fluorine is the most electronegative element; it may be helpful to remember that electronegativity increases as you go to the upper right of the periodic table.
by Veronica Lu 3L
Sun Oct 27, 2019 9:49 pm
Forum: Ionic & Covalent Bonds
Topic: Covalent Bonds
Replies: 11
Views: 63

Re: Covalent Bonds

ionic bonds are characterized as a bond between a metal and a nonmetal, whereas covalent bonds are bonds between two nonmetals.
by Veronica Lu 3L
Sun Oct 27, 2019 9:43 pm
Forum: Sigma & Pi Bonds
Topic: Which bond would break first.
Replies: 15
Views: 548

Re: Which bond would break first.

the pi bond is much weaker than the sigma bond due to the differences in the way that they overlap. Therefore, the pi bond would break first.
by Veronica Lu 3L
Sun Oct 27, 2019 9:40 pm
Forum: Sigma & Pi Bonds
Topic: Importance of Sigma/Pi Bonds
Replies: 5
Views: 170

Re: Importance of Sigma/Pi Bonds

Having the knowledge of whether a bond is a sigma or a pi bond allows one to figure out the structure of the molecule
by Veronica Lu 3L
Sun Oct 27, 2019 9:36 pm
Forum: Sigma & Pi Bonds
Topic: Single vs. Double bonds
Replies: 15
Views: 73

Re: Single vs. Double bonds

The double bonds are much stronger than single bonds, therefore the pull is stronger making them shorter
by Veronica Lu 3L
Sun Oct 27, 2019 9:32 pm
Forum: Properties of Electrons
Topic: Electron removal
Replies: 11
Views: 54

Re: Electron removal

Electrons that are closer to the nucleus are subject to more pull from the positively charged nucleus.
by Veronica Lu 3L
Sun Oct 13, 2019 4:52 pm
Forum: Properties of Electrons
Topic: electron energy
Replies: 4
Views: 37

Re: electron energy

The amount of energy it takes to remove an electron from the ground state of a gaseous atom, molecule or ion. The first ionization energy is the energy needed to remove the first electron from an atom. the second ionization energy is the energy needed to remove the second one and so on.
by Veronica Lu 3L
Sun Oct 13, 2019 4:46 pm
Forum: Einstein Equation
Topic: Units
Replies: 17
Views: 575

Re: Units

I think for the most part it would only go as far as kilograms, but in any case, if megagrams and gigagrams were necessary I think we would be provided a formula sheet to convert the numbers.
by Veronica Lu 3L
Sun Oct 13, 2019 4:41 pm
Forum: Trends in The Periodic Table
Topic: Atomic Radius
Replies: 16
Views: 114

Re: Atomic Radius

The atomic radius is measured only in the group state of the element. A side note: atomic radius increases as you go from the left of the periodic table and down. Therefore, francium has the largest atomic radius out of all the elements.
by Veronica Lu 3L
Sun Oct 13, 2019 4:35 pm
Forum: Properties of Electrons
Topic: electron energy levels
Replies: 6
Views: 24

Re: electron energy levels

Electrons in the outer shell are further from the nucleus; therefore, they are less susceptible to the attractive forces from the nucleus pulling them in.
by Veronica Lu 3L
Sun Oct 13, 2019 10:45 am
Forum: Properties of Electrons
Topic: Constructive vs Destructive Inference
Replies: 4
Views: 27

Re: Constructive vs Destructive Inference

constructive inference is is "constructive" in the sense that its crests are aligned with that of another waves, which does create a higher amplitude. On the other hand, destructive inference is when the waves are unaligned and creates a lower amplitude.
by Veronica Lu 3L
Sun Oct 06, 2019 4:47 pm
Forum: Properties of Light
Topic: unit change
Replies: 4
Views: 34

Re: unit change

The negative exponent brings the “s” down to the denominator, making it “per second”.
by Veronica Lu 3L
Sun Oct 06, 2019 4:43 pm
Forum: Properties of Light
Topic: Oscillating Frequency
Replies: 2
Views: 25

Re: Oscillating Frequency

Longer wavelength means shorter frequency, (inverse relationship) since the longer wavelength can pass through less cycles in a set amount of time compared to shorter wavelengths. Blue light has a shorter frequency so it’s wavelength would be longer.
by Veronica Lu 3L
Sun Oct 06, 2019 4:35 pm
Forum: Properties of Light
Topic: White Light
Replies: 2
Views: 9

Re: White Light

I think white light is in a sense a homogenous mixture of all the different wavelengths (thus colors) of light
by Veronica Lu 3L
Sun Oct 06, 2019 4:28 pm
Forum: Limiting Reactant Calculations
Topic: Reactant vs. Reagent
Replies: 4
Views: 35

Re: Reactant vs. Reagent

There is no difference; reactant and reagent are the same thing.
by Veronica Lu 3L
Thu Oct 03, 2019 4:57 pm
Forum: Accuracy, Precision, Mole, Other Definitions
Topic: Lab experiments- accuracy vs precision
Replies: 7
Views: 62

Re: Lab experiments- accuracy vs precision

Precision is how close together your results are to each other, whereas accuracy refers to how close to the known (correct) value the results are.

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