CHEMISTRY COMMUNITY

Kristin Ishaya 1A

A sign outside the chemistry hotel reads "Great Day Rates, Even Better NO3's!"

Kristin Ishaya 1A

He/she threw sodium chloride at me! That's a salt!

Kristin Ishaya 1A

What did the scientist say when he/she found two isotopes of helium? HeHe.

Kristin Ishaya 1A

Chemistry? More like cheMYSTERY because I have no idea what's going on...

Kristin Ishaya 1A

I hate bad chemistry jokes. Hearing one really Hz my ears.

Kristin Ishaya 1A

If you're serious about chemistry, the only frat you should be thinking about joining is Sig Fig. ;)

Kristin Ishaya 1A

You only use the single line to separate molecules that are in different states/phases (i.e. a solid and an aqueous solution). I'm pretty sure he made a mistake by writing that, and I think he pointed out that mistake during the review session too.

Kristin Ishaya 1A

Balancing a basic solution just takes a bit longer and is a bit more complex since there are more steps. First you balance the oxygens by adding H2O, then you balance the hydrogens by adding H+ (this is where you would stop if it were an acidic solution), then you balance the H+ by adding OH-, then ...

Kristin Ishaya 1A

Yeah, if you're talking about that equation mentioned above, the n itself is not negative, but the negative sign in the equation can make your final answer negative. n is just the number of moles of electrons.

Kristin Ishaya 1A

You can also tell an element's reducing and oxidizing power by looking at its cell potential for the redox reaction. The larger the cell potential number, the more oxidizing power the element has. The smaller the cell potential number, the more reducing power it has.

Kristin Ishaya 1A

The equation for irreversible expansion is the one that is used more often and is more common. I'm pretty sure you'd only need to use the equation for reversible expansion if the pressure is not constant.

Kristin Ishaya 1A

Water: Hey oil! Wanna hang out?

Oil: Sorry. I can't mix with you guys.

Water: Hydrophobe!

Kristin Ishaya 1A

You only add OH- when dealing with basic solutions. So, when balancing a basic solution, you start by adding H2O to balance the oxygens. Then you add H+ to balance the hydrogens. (This is where you would stop if it were an acidic solution.) Then you add OH- to balance the H+ (because you can't have ...

Kristin Ishaya 1A

I'm pretty sure there will be a curve for this class, although I don't know how much it will help. I had him last quarter and he curved for 14A.

Kristin Ishaya 1A

Was question 4A from the midterm a reversible expansion problem? I didn't know which formula to use so I did it both ways.

Kristin Ishaya 1A

"Want to talk about Sodium?"
----Na.
"Nitric Oxide?"
----NO.
"Oxygen, Magnesium, Phosphorous, Iodine, Sulfur, or Fluorine?"
----OMg PIS OFF.
"...Potassium?"
----K.

Kristin Ishaya 1A

"What's the difference between a proton and an electron?"
"I'm not positive, but I think a proton is..."

Kristin Ishaya 1A

Electron: I have a problem man. I think I might be a compulsive liar...
Proton: Are you positive?
Electron: Yeah.
Proton: I guess you are a liar.

Kristin Ishaya 1A

Me: My favorite jokes are about Cobalt, Radon, and Yttrium.

Person: Why's that?

Me: Because I love CoRnY chemistry jokes.

Kristin Ishaya 1A

Q: What does the leader of an electron army say when they go to war?
A: CHARGE!

Kristin Ishaya 1A

I was wondering, when you open a refrigerator in a closed room, why doesn’t the room become colder? Why does it become warmer? Shouldn’t the cold air leave the refrigerator and cool the surroundings according to the laws of entropy?

Kristin Ishaya 1A

Q: How did Carbon propose to Hydrogen?
A: With a "carbonkneel"

Kristin Ishaya 1A

Q: Why can't lawyers do NMR?
A: Bar magnets have poor homogeneity.

Kristin Ishaya 1A

Valentine’s Day is coming up, so here’s a cute science love song filled with a bunch of puns. ;)

https://m.youtube.com/watch?v=pocNl2YhZdM

Kristin Ishaya 1A

Chemistry Pickup Line:

You’re like an exothermic reaction—you spread hotness everywhere.

Kristin Ishaya 1A

Chemistry Pickup Line:

Forget hydrogen, you’re my number one element. ;)

Kristin Ishaya 1A

Party hard in the summer, they said. So I decided to drop the base on them.

Kristin Ishaya 1A

As defined by the textbook, “q is the energy supplied to the system as heat and w is the energy supplied the system as work” (page 278). Basically, q refers to the energy that is transferred or absorbed in a system and work is caused by either an internal or external force that is applied to the sys...

Kristin Ishaya 1A

This depends on whether the work is positive or negative. Work done on the system is positive and work done by the system is negative. Here is an example: A gas always exerts force on the walls of its container. It is always trying to continuously expand/push in the outward direction. This is the sy...

Kristin Ishaya 1A

By definition, “q is the energy supplied to the system as heat” (page 278 from the textbook). In this specific question, there is no heat being supplied to the system. There is no heat needed to compress a bicycle pump. There is only energy (w) being supplied through compression. Therefore, q = 0 an...

CHEMISTRY COMMUNITY

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