Search found 23 matches

by 204765696
Sun Nov 25, 2018 7:51 pm
Forum: Lewis Structures
Topic: Complete Lewis Structures
Replies: 4
Views: 106

Re: Complete Lewis Structures

Either is fine but you should know how to identify both of them.
by 204765696
Sun Nov 25, 2018 7:50 pm
Forum: Dipole Moments
Topic: What are dipole moments used for?
Replies: 3
Views: 86

Re: What are dipole moments used for?

Yes that is correct. Dipole moments refer to the polarization of the electrons in a bond.
by 204765696
Sun Nov 25, 2018 7:48 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Shapes Not covered in Lecture
Replies: 10
Views: 182

Re: Shapes Not covered in Lecture

I'm not sure, but just to be safe we should
by 204765696
Sun Nov 25, 2018 7:47 pm
Forum: Hybridization
Topic: Test 3
Replies: 13
Views: 189

Re: Test 3

Yes but I don't think we have to draw them. I think we just need to know how to identify and describe them.
by 204765696
Sun Nov 18, 2018 3:13 pm
Forum: Resonance Structures
Topic: Polar
Replies: 8
Views: 363

Re: Polar

You use the one with formal charges closest to 0.
by 204765696
Sun Nov 18, 2018 3:11 pm
Forum: Lewis Structures
Topic: Maximum amount of bonds
Replies: 5
Views: 127

Re: Maximum amount of bonds

It depends on the element. To calculate bond order in chemistry, subtract the number of the electrons in the anti-bonding molecules from the number of electrons in the bonding molecules. Then, divide the result by 2. The higher the bond order, the more stable the molecule.
by 204765696
Sun Nov 18, 2018 3:00 pm
Forum: Sigma & Pi Bonds
Topic: usage of sigma/pi
Replies: 6
Views: 200

Re: usage of sigma/pi

The sigma and pi bonds tells us the strength of the interactions and the behavior of the molecules.
by 204765696
Sat Nov 10, 2018 5:52 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Bond Angles
Replies: 13
Views: 246

Re: Bond Angles

To identify bond angles and shape, locate the central atom and see how many bonds are connected to it. You also have to count the lone pairs as bonds. If the number of bonds is 2, the shape is linear and angles are 180 degrees. If the number of bonds is 3, then the shape is triagonal planar and angl...
by 204765696
Sat Nov 10, 2018 5:46 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Molecular Shapes
Replies: 4
Views: 87

Re: Molecular Shapes

No they're also determined by the number of bonds and the number of lone pairs on the central atom. The lone pairs are important because it makes the shape of the molecule.
by 204765696
Sat Nov 10, 2018 5:44 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Shapes
Replies: 5
Views: 105

Re: Shapes

All molecules with four bonding pairs and no lone pairs are tetrahedral
by 204765696
Sat Nov 10, 2018 5:41 pm
Forum: Hybridization
Topic: sp^3d or dsp^3
Replies: 6
Views: 253

Re: sp^3d or dsp^3

No the order doesn't matter!
by 204765696
Fri Nov 02, 2018 11:46 pm
Forum: Sigma & Pi Bonds
Topic: Pi bonds
Replies: 3
Views: 1559

Re: Pi bonds

If the atom has more than three valence electrons in its outer shell, three of the electron orbitals hybridize and one of the p orbitals remains unhybridized. It is the unhybridized p orbitals that then form pi bonds for double bonding. Just as with the sp2 hybrids, the unhybridized electrons can th...
by 204765696
Fri Nov 02, 2018 11:44 pm
Forum: Ionic & Covalent Bonds
Topic: Ionic vs Covalent Bonds
Replies: 18
Views: 496

Re: Ionic vs Covalent Bonds

These two opposite ions attract each other and form the ionic bond. Covalent bonding is a form of chemical bonding between two non metallic atoms which is characterized by the sharing of pairs of electrons between atoms and other covalent bonds
by 204765696
Fri Nov 02, 2018 11:43 pm
Forum: Ionic & Covalent Bonds
Topic: Non-polar and Polar Covalent Bonds
Replies: 3
Views: 94

Re: Non-polar and Polar Covalent Bonds

Nonpolar covalent bonds are a type of chemical bond where two atoms share a pair of electrons with each other. Polar covalent bonding is a type of chemical bond where a pair of electrons is unequally shared between two atoms.
by 204765696
Sun Oct 28, 2018 1:22 am
Forum: Properties of Light
Topic: Power calculations
Replies: 6
Views: 252

Re: Power calculations

It can be for many reasons, however one of the common mistakes are placing parantheses in the right places. You should check that!
by 204765696
Sun Oct 28, 2018 1:21 am
Forum: Properties of Light
Topic: Photoelectric Effect
Replies: 8
Views: 246

Re: Photoelectric Effect

It's the emission of electrons from a material due to the shining of a light
by 204765696
Sun Oct 28, 2018 1:20 am
Forum: Properties of Light
Topic: Speed of Light
Replies: 12
Views: 265

Re: Speed of Light

Only if the particle has mass, it cannot be faster than the speed of light
by 204765696
Sat Oct 20, 2018 3:44 pm
Forum: Trends in The Periodic Table
Topic: s, p, d, f
Replies: 16
Views: 356

Re: s, p, d, f

The orbitals s, p, d, f have different shapes and sizes
by 204765696
Sat Oct 20, 2018 3:43 pm
Forum: Trends in The Periodic Table
Topic: Textbook Reading
Replies: 4
Views: 75

Re: Textbook Reading

I think it doesn't hurt to read the textbook reading even if we don't have to cause it might be helpful for other concepts we need to know!
by 204765696
Sat Oct 20, 2018 3:40 pm
Forum: Trends in The Periodic Table
Topic: Homework
Replies: 10
Views: 187

Re: Homework

Yes! It's any 7 problems you want to do from outline 2!
by 204765696
Sat Oct 13, 2018 1:14 pm
Forum: Limiting Reactant Calculations
Topic: Test 1
Replies: 5
Views: 239

Re: Test 1

I'm not sure how grading works for Professor Lavelle, but I feel like it would be fair to give us partial credit instead of zero points especially if our answer was only off a couple decimal points. As long as we showed our work and put effort in, I think we'll be fine.
by 204765696
Sat Oct 13, 2018 1:09 pm
Forum: SI Units, Unit Conversions
Topic: mol vs. mmol
Replies: 12
Views: 418

Re: mol vs. mmol

1 mol vs 1 mmol is that 1 mmol is equivalent to 10^-3 mol.
by 204765696
Sat Oct 13, 2018 1:07 pm
Forum: SI Units, Unit Conversions
Topic: Should Significant Figures be affected by constants?
Replies: 10
Views: 262

Re: Should Significant Figures be affected by constants?

Significant figures are not affected by constants. The important rule is to have the same amount of significant figures in your answer and in the value given in the original problem.

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