Search found 50 matches

by Kehlin Hayes 4C
Mon Dec 02, 2019 1:12 pm
Forum: Properties & Structures of Inorganic & Organic Bases
Topic: Are noble gases considered bases?
Replies: 8
Views: 919

Re: Are noble gases considered bases?

No because Noble gases usually have their valence electrons filled and don't need to make any further bonds
by Kehlin Hayes 4C
Mon Dec 02, 2019 1:12 pm
Forum: Conjugate Acids & Bases
Topic: Definition
Replies: 7
Views: 53

Re: Definition

In a Conjugate Acid, the base gains hydrogens. and the Conjugated Base, the acid loses the hydrogen
by Kehlin Hayes 4C
Mon Dec 02, 2019 1:10 pm
Forum: Conjugate Acids & Bases
Topic: Ligands
Replies: 12
Views: 74

Re: Ligands

Ligands donate electron pairs
by Kehlin Hayes 4C
Mon Dec 02, 2019 1:08 pm
Forum: Properties & Structures of Inorganic & Organic Bases
Topic: Difference between inorganic and organic
Replies: 4
Views: 64

Re: Difference between inorganic and organic

Organic bases are usually found in organic compounds and can donate electron pairs. Inorganic bases doesn't and disassociates.
by Kehlin Hayes 4C
Sun Nov 24, 2019 9:09 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: H3O+
Replies: 11
Views: 319

Re: H3O+

This molecule is tetrahedral because it has four regions of electron density, one being a lone pair.
by Kehlin Hayes 4C
Sun Nov 24, 2019 9:07 pm
Forum: Sigma & Pi Bonds
Topic: sigma and pi bonds
Replies: 19
Views: 166

Re: sigma and pi bonds

yes you are correct
by Kehlin Hayes 4C
Sun Nov 24, 2019 9:06 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: AXE Format
Replies: 34
Views: 167

Re: AXE Format

Just like when writing chemical formulas the subscript of 1 isnt neccessary
by Kehlin Hayes 4C
Sun Nov 24, 2019 9:05 pm
Forum: Shape, Structure, Coordination Number, Ligands
Topic: Ligand
Replies: 10
Views: 62

Re: Ligand

A ligand refers to the molecule that is attached to a central metal
by Kehlin Hayes 4C
Sun Nov 24, 2019 9:04 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Bent Shape
Replies: 29
Views: 270

Re: Bent Shape

A bent shape can have either one or two lone pairs
by Kehlin Hayes 4C
Sun Nov 24, 2019 9:03 pm
Forum: Naming
Topic: Oxidation
Replies: 14
Views: 129

Re: Oxidation

The oxidation number refers to the overall charge the molecule has
by Kehlin Hayes 4C
Sun Nov 24, 2019 9:02 pm
Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
Topic: Sigma and Pi Bonds
Replies: 15
Views: 124

Re: Sigma and Pi Bonds

Order is not important, just know a triple bond means a sigma bond with two pi bonds
by Kehlin Hayes 4C
Sun Nov 24, 2019 9:01 pm
Forum: Naming
Topic: Meaning of Cis and Trans
Replies: 11
Views: 62

Re: Meaning of Cis and Trans

Cis refers to when the atom has the dipole movements on the same side of the molecule making it polar. Trans means the dipole movements are on opposing sides cancelling out making the molecule non polar.
by Kehlin Hayes 4C
Sun Nov 24, 2019 9:00 pm
Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
Topic: types of bonds
Replies: 14
Views: 310

Re: types of bonds

Yes a triple bond equals a sigma bond with two pi bonds
by Kehlin Hayes 4C
Sun Nov 17, 2019 10:04 am
Forum: Determining Molecular Shape (VSEPR)
Topic: VSEPR notation
Replies: 8
Views: 69

Re: VSEPR notation

The formula would be AX3 because there is one central atom of N and three surrounding O with no lone pairs
by Kehlin Hayes 4C
Sun Nov 17, 2019 10:02 am
Forum: Formal Charge and Oxidation Numbers
Topic: Calculating formal charge
Replies: 8
Views: 75

Re: Calculating formal charge

It does not matter, it is best to calculate the formal charge of each atom to see if you have the desired overall formal charge of the molecule.
by Kehlin Hayes 4C
Sun Nov 17, 2019 10:00 am
Forum: Determining Molecular Shape (VSEPR)
Topic: VSEPR notation
Replies: 6
Views: 74

Re: VSEPR notation

You are correct
by Kehlin Hayes 4C
Sun Nov 17, 2019 9:59 am
Forum: Determining Molecular Shape (VSEPR)
Topic: VSEPR Formula
Replies: 7
Views: 39

Re: VSEPR Formula

Yes but they are slightly different than counting bond pairs
by Kehlin Hayes 4C
Sun Nov 17, 2019 9:57 am
Forum: Determining Molecular Shape (VSEPR)
Topic: regions of electron density
Replies: 10
Views: 55

Re: regions of electron density

Yes it is the area that electrons are most likely found
by Kehlin Hayes 4C
Sun Nov 17, 2019 9:57 am
Forum: Determining Molecular Shape (VSEPR)
Topic: What is VSPER
Replies: 14
Views: 177

Re: What is VSPER

VSPER stands for Valence Shell electron pair Repulsion and it is not necessary to memorize
by Kehlin Hayes 4C
Sun Nov 17, 2019 9:54 am
Forum: Determining Molecular Shape (VSEPR)
Topic: polar and nonpolar
Replies: 3
Views: 31

Re: polar and nonpolar

Cis means that the dipole moments of that molecule are on the same side which makes it polar, enabling it to form interactions with other polar molecules. Trans means the dipole moments are on opposing sides of the molecule cancelling out making the molecule nonpolar, this would prevent the molecule...
by Kehlin Hayes 4C
Sun Nov 17, 2019 9:52 am
Forum: Dipole Moments
Topic: Dipole-Dipole Conti.
Replies: 2
Views: 16

Re: Dipole-Dipole Conti.

It's possible that the dipole forces cancel out and thats why the molecule is nonpolar.
by Kehlin Hayes 4C
Sun Nov 17, 2019 9:50 am
Forum: Determining Molecular Shape (VSEPR)
Topic: Van Der Waals Interaction
Replies: 11
Views: 70

Re: Van Der Waals Interaction

Yes all molecules experience Van der Waals forces and it has the lowest interaction, although it has the potential to have the strongest interactions
by Kehlin Hayes 4C
Sun Nov 17, 2019 9:49 am
Forum: Interionic and Intermolecular Forces (Ion-Ion, Ion-Dipole, Dipole-Dipole, Dipole-Induced Dipole, Dispersion/Induced Dipole-Induced Dipole/London Forces, Hydrogen Bonding)
Topic: Intermolecular Forces and Boiling/Melting Points
Replies: 3
Views: 21

Re: Intermolecular Forces and Boiling/Melting Points

The stronger the bond the more energy required to break it. So stronger intramolecular bonds would increase melting/boiling points in most cases.
by Kehlin Hayes 4C
Sat Nov 02, 2019 8:11 pm
Forum: Polarisability of Anions, The Polarizing Power of Cations
Topic: polar
Replies: 3
Views: 23

Re: polar

A polar molecule has a partial charge associated with them because of the unequal sharing of electron that results in the molecule having an either positive or negative overall charge.
by Kehlin Hayes 4C
Sat Nov 02, 2019 8:10 pm
Forum: Lewis Structures
Topic: Formal Charge for Lewis Structures
Replies: 4
Views: 44

Re: Formal Charge for Lewis Structures

Calculating the Formal Charge is a great way to check if the molecule has the correct structure and the correct charge its supposed to have as well as taking the average of all these different structures get us the resonance which the formal charge is calculated for all the structures.
by Kehlin Hayes 4C
Sat Nov 02, 2019 8:08 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: Cu and Cr
Replies: 11
Views: 77

Re: Cu and Cr

Yes because the electrons are more stable in that state so the trend still applies
by Kehlin Hayes 4C
Sat Nov 02, 2019 8:07 pm
Forum: Electronegativity
Topic: electronegativity
Replies: 3
Views: 32

Re: electronegativity

Usually if electronegativity values are needed they would be provided because the periodic table doesn't show the numeric values of electronegativity, it is important to know how the trend works which is from bottom to top and left to right.
by Kehlin Hayes 4C
Sat Nov 02, 2019 8:05 pm
Forum: Lewis Structures
Topic: ONF lewis structure
Replies: 2
Views: 23

Re: ONF lewis structure

Right it goes by which atom has the lowest electronegativity which defines how well at atom takes and accepts an electron and the trend goes from top to bottom and left to right.
by Kehlin Hayes 4C
Sat Nov 02, 2019 8:03 pm
Forum: Ionic & Covalent Bonds
Topic: ionic bonds
Replies: 4
Views: 42

Re: ionic bonds

After you find the molecular compound its best to see what kind of energy level or bond length there is and what kind of pattern it follows, whether it dissociates it water or not
by Kehlin Hayes 4C
Sun Oct 27, 2019 10:08 am
Forum: Ionic & Covalent Bonds
Topic: Cation
Replies: 23
Views: 242

Re: Cation

Cations are atoms that have lost an electron and therefore receive a negative charge and Anions have gained an electron receive a negative charge. With this being said a Cation is always smaller than their corresponding atom because they are losing a valence electron and Anions are always bigger tha...
by Kehlin Hayes 4C
Sun Oct 27, 2019 9:50 am
Forum: Lewis Structures
Topic: Drawing the structure
Replies: 7
Views: 62

Re: Drawing the structure

It is still considered a Lewis Dot diagram approach for the electron configuration but Phosphorus is a special case
by Kehlin Hayes 4C
Sun Oct 27, 2019 9:49 am
Forum: SI Units, Unit Conversions
Topic: Midterm
Replies: 6
Views: 98

Re: Midterm

Yes material up to and including chemical bonds and resonance
by Kehlin Hayes 4C
Sun Oct 27, 2019 9:48 am
Forum: Lewis Structures
Topic: Drawing Lewis Structure
Replies: 6
Views: 40

Re: Drawing Lewis Structure

Drawing them is beneficial in keeping track of the electron figuration and when dealing with finding resonance structures because then the number of valence electrons can vary.
by Kehlin Hayes 4C
Sun Oct 27, 2019 9:46 am
Forum: Resonance Structures
Topic: Bond lengths
Replies: 5
Views: 41

Re: Bond lengths

We don't have to find any bond lengths, they are usually provided in Angstroms that can also specify whether it is a single bond or a double bond.
by Kehlin Hayes 4C
Sat Oct 19, 2019 7:31 pm
Forum: Quantum Numbers and The H-Atom
Topic: Correlation Between n and l
Replies: 6
Views: 70

Re: Correlation Between n and l

l is the second number that gives you the Angular Momentum which determines the shape of the nodes of orbitals.
by Kehlin Hayes 4C
Sat Oct 19, 2019 7:29 pm
Forum: Heisenberg Indeterminacy (Uncertainty) Equation
Topic: Heisenberg
Replies: 4
Views: 18

Re: Heisenberg

It is difficult to find the exact position of particles, particularly electrons, so it measures the uncertainty of that particles momentum and position.
by Kehlin Hayes 4C
Thu Oct 17, 2019 1:49 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: Orbitals and Quantum Numbers
Replies: 1
Views: 30

Orbitals and Quantum Numbers

Which Quantum numbers tell you whether the wave function is in the x, y , or z state? for example 2Px, 2Py, 2Pz?
by Kehlin Hayes 4C
Thu Oct 17, 2019 1:48 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: Heisenberg's Indeterminacy Equation
Replies: 3
Views: 42

Heisenberg's Indeterminacy Equation

Is Heisenberg's Indeterminacy equation only used when trying to find the position and momentum of an electron?
by Kehlin Hayes 4C
Thu Oct 17, 2019 1:46 pm
Forum: Photoelectric Effect
Topic: Schrodinger's Equation
Replies: 2
Views: 31

Schrodinger's Equation

What is the concept of Hamiltonian Wave Function and how does that relate to the electron Wave Function?
by Kehlin Hayes 4C
Sun Oct 13, 2019 8:37 pm
Forum: Properties of Light
Topic: Photons
Replies: 4
Views: 38

Re: Photons

A photon is the particle of light that is quantized
by Kehlin Hayes 4C
Sun Oct 13, 2019 8:35 pm
Forum: Properties of Light
Topic: Electron energy levels
Replies: 2
Views: 37

Re: Electron energy levels

The energy levels are discrete, so when the atoms excite and travel through the levels signified by whole numbers.
by Kehlin Hayes 4C
Sun Oct 13, 2019 8:33 pm
Forum: SI Units, Unit Conversions
Topic: knowing how many sig figs to use
Replies: 17
Views: 182

Re: knowing how many sig figs to use

For calculations you may use as many decimal places as you see fit to be accurate but its good to use your answer in the least number of sig figs in the question.
by Kehlin Hayes 4C
Sun Oct 13, 2019 8:29 pm
Forum: Properties of Light
Topic: Speed of light.
Replies: 10
Views: 72

Re: Speed of light.

Yes we consider the speed of light in a vacuum to be a constant that we consider c
by Kehlin Hayes 4C
Sun Oct 13, 2019 8:27 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: 1D.25
Replies: 2
Views: 19

Re: 1D.25

The subshell of (c) 4g cannot exist in an atom, I believe.
by Kehlin Hayes 4C
Fri Oct 04, 2019 3:04 pm
Forum: Einstein Equation
Topic: Planck's constant
Replies: 9
Views: 159

Re: Planck's constant

Plugging in Planck's constant is in reference to measuring how much energy is exerted by photons.
by Kehlin Hayes 4C
Fri Oct 04, 2019 3:03 pm
Forum: Accuracy, Precision, Mole, Other Definitions
Topic: Accuracy v Precision
Replies: 11
Views: 133

Re: Accuracy v Precision

Accuracy is defined as how close to the exact amount your measurement was, in other words, how close and correct you were. And Precision is defined as the consistency and closeness of your measurements. Its important to have both when conducting experiments.
by Kehlin Hayes 4C
Fri Oct 04, 2019 3:00 pm
Forum: Balancing Chemical Reactions
Topic: Strategies for Balancing Chemical Equations
Replies: 12
Views: 112

Re: Strategies for Balancing Chemical Equations

It might also help to examine the full equation and start with the elemnts or molecules taht appear the least amount of times on each side and work your way up.
by Kehlin Hayes 4C
Fri Oct 04, 2019 2:59 pm
Forum: Accuracy, Precision, Mole, Other Definitions
Topic: sig figs
Replies: 20
Views: 193

Re: sig figs

The best measure of how many sig figs to use is to look in the question provided and use the smallest amount, it also helps to try and keep the number of sig figs consistent for all measurements.
by Kehlin Hayes 4C
Fri Oct 04, 2019 2:58 pm
Forum: Properties of Light
Topic: c = fλ
Replies: 9
Views: 87

Re: c = fλ

You can use the inverse relationship between frequency and wavelength in order to find the constant speed of light.

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