Search found 30 matches

by MariaJohn1D
Fri Jun 08, 2018 9:53 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7337
Views: 788740

Re: Post All Chemistry Jokes Here

If avogadro calls tell him to leave his number...
by MariaJohn1D
Fri Jun 08, 2018 9:52 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7337
Views: 788740

Re: Post All Chemistry Jokes Here

Do I know any jokes about sodium? Na
by MariaJohn1D
Fri Jun 08, 2018 9:51 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7337
Views: 788740

Re: Post All Chemistry Jokes Here

A covalent bond joke? Thanks for sharing...
by MariaJohn1D
Fri Jun 08, 2018 9:50 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7337
Views: 788740

Re: Post All Chemistry Jokes Here

Don't tell jokes to noble gases you'll get no reaction.
by MariaJohn1D
Fri Jun 08, 2018 9:50 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7337
Views: 788740

Re: Post All Chemistry Jokes Here

I tell bad chemistry jokes bc all the good ones Argon...
by MariaJohn1D
Fri Jun 08, 2018 9:49 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7337
Views: 788740

Re: Post All Chemistry Jokes Here

I like chemistry jokes bc they are funny
He He He
by MariaJohn1D
Fri Jun 08, 2018 9:48 pm
Forum: Resonance Structures
Topic: Contributing to Resonance Structures
Replies: 4
Views: 190

Re: Contributing to Resonance Structures

The molecule with the lowest formal charge is deemed as most stable and that would be the most favorable resonance structure.
by MariaJohn1D
Fri Jun 08, 2018 9:28 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: formal charge and VSEPR
Replies: 8
Views: 159

Re: formal charge and VSEPR

VESPR is used to predict molecular geometry using valence shell electrons
by MariaJohn1D
Fri Jun 08, 2018 9:13 pm
Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
Topic: Isoelectronic
Replies: 14
Views: 401

Re: Isoelectronic

Isoelectronic means that both atoms have the same number of valence electrons. Ex: Na+,F-
by MariaJohn1D
Fri Jun 08, 2018 9:12 pm
Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
Topic: Isoelectronic
Replies: 14
Views: 401

Re: Isoelectronic

Isoelectronic means that both atoms have the same number of valence electrons. Ex: Na+,F-
by MariaJohn1D
Fri Jun 08, 2018 8:54 pm
Forum: Hybridization
Topic: Pi bonds in triple bond
Replies: 17
Views: 299

Re: Pi bonds in triple bond

one sigma bond and 2 pi bonds
by MariaJohn1D
Wed Jun 06, 2018 4:41 pm
Forum: Properties of Light
Topic: Wave and Particle
Replies: 10
Views: 285

Re: Wave and Particle

a single particle of light is called a photon whereas a stream of photons is light
by MariaJohn1D
Wed Jun 06, 2018 4:39 pm
Forum: Bond Lengths & Energies
Topic: unit box
Replies: 3
Views: 155

unit box

What is a unit box?
by MariaJohn1D
Wed Jun 06, 2018 4:36 pm
Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
Topic: Le Chatelier's
Replies: 1
Views: 161

Le Chatelier's

What is the relationship between Le Chatelier's principle and hydrogen molecules?
by MariaJohn1D
Wed Jun 06, 2018 4:34 pm
Forum: Polyprotic Acids & Bases
Topic: oxacids and carboxylic acids
Replies: 5
Views: 154

oxacids and carboxylic acids

What is the difference between oxoacids and carboxylic acids?
by MariaJohn1D
Wed Jun 06, 2018 4:32 pm
Forum: Conjugate Acids & Bases
Topic: conjugate seesaw
Replies: 1
Views: 108

conjugate seesaw

What is meant by conjugate see saw?
by MariaJohn1D
Wed Jun 06, 2018 4:26 pm
Forum: Conjugate Acids & Bases
Topic: pKa [ENDORSED]
Replies: 3
Views: 198

pKa [ENDORSED]

How do you know the pKa?
by MariaJohn1D
Wed Jun 06, 2018 4:25 pm
Forum: Identifying Acidic & Basic Salts
Topic: Identifying strong acids and bases
Replies: 2
Views: 240

Re: Identifying strong acids and bases

What's a binary acid?
by MariaJohn1D
Wed Jun 06, 2018 4:19 pm
Forum: Limiting Reactant Calculations
Topic: Reactant vs. Reagent [ENDORSED]
Replies: 23
Views: 5890

Re: Reactant vs. Reagent [ENDORSED]

They can be used interchangeably, but reagents are not usually solvents
by MariaJohn1D
Thu May 17, 2018 9:32 pm
Forum: Ionic & Covalent Bonds
Topic: Configurations
Replies: 4
Views: 104

Configurations

Why do you remove electrons from the highest energy levels first? Ex: from 5s^2 before 4d^10
by MariaJohn1D
Sun Apr 29, 2018 9:40 pm
Forum: Photoelectric Effect
Topic: increasing frequency/ light intensity
Replies: 5
Views: 229

Re: increasing frequency/ light intensity

Changing the frequency changes the wavelength and changing the number of photons changes the light intensity.
by MariaJohn1D
Sun Apr 29, 2018 9:38 pm
Forum: Trends in The Periodic Table
Topic: Radius
Replies: 6
Views: 257

Re: Radius

In a neutral atom the atomic and ionic radii are the same but if there are cations and anions the electron loses a shell and the ionic radius becomes smaller.
by MariaJohn1D
Sun Apr 29, 2018 7:00 pm
Forum: Properties of Light
Topic: Homework Problem(s) [ENDORSED]
Replies: 6
Views: 164

Re: Homework Problem(s) [ENDORSED]

The masses of these will be given on equation sheet.
by MariaJohn1D
Sun Apr 29, 2018 6:52 pm
Forum: Quantum Numbers and The H-Atom
Topic: What do l and m represent? [ENDORSED]
Replies: 6
Views: 159

Re: What do l and m represent? [ENDORSED]

M represents magnetic momentum and l represents angular momentum
by MariaJohn1D
Sun Apr 29, 2018 6:46 pm
Forum: Quantum Numbers and The H-Atom
Topic: Amount of Electrons [ENDORSED]
Replies: 6
Views: 205

Re: Amount of Electrons [ENDORSED]

These numbers respond to a single electron. Think of it like an ID number each electron has its unique set of quantum numbers.
by MariaJohn1D
Sun Apr 29, 2018 6:32 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: Why does 4s fill up before 3d?
Replies: 4
Views: 131

Why does 4s fill up before 3d?

Why does the 4s orbital fill up before 3d orbital other than that it's at a "lower energy level"?
by MariaJohn1D
Sun Apr 29, 2018 6:27 pm
Forum: DeBroglie Equation
Topic: Quanta
Replies: 5
Views: 183

Re: Quanta

Quanta is a small packet of energy such as a photon.
by MariaJohn1D
Sun Apr 29, 2018 6:23 pm
Forum: DeBroglie Equation
Topic: Calculating wavelength of an electron
Replies: 4
Views: 135

Re: Calculating wavelength of an electron

When you know velocity of an electron and need to know wavelength use De Broglie's equation. lambda= h/mv
by MariaJohn1D
Sun Apr 29, 2018 6:19 pm
Forum: *Black Body Radiation
Topic: What is Significant about Black Body Radiation? [ENDORSED]
Replies: 4
Views: 329

Re: What is Significant about Black Body Radiation? [ENDORSED]

Black bodies are hot objects that glow(incandescence) and as the temperature rises and shorter wavelengths. The ultraviolet catastrophe is when energy is transferred in packets(quanta), otherwise there would always be darkness.
by MariaJohn1D
Mon Apr 16, 2018 11:54 am
Forum: Empirical & Molecular Formulas
Topic: Molecular to Empirical [ENDORSED]
Replies: 12
Views: 366

Re: Molecular to Empirical [ENDORSED]

To go from the molecular formula to the empirical formula you should divide by the greatest common denominator. Please keep in mind that the molecular and empirical formula can be the same.

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