Search found 14 matches
- Sun Jan 28, 2018 9:41 pm
- Forum: Thermodynamic Systems (Open, Closed, Isolated)
- Topic: Difference between systems? [ENDORSED]
- Replies: 8
- Views: 1099
Re: Difference between systems? [ENDORSED]
Once a person opens the thermos to drink, it becomes an open system, as both mass (the water) and energy (heat) can flow from the system to the surroundings and vice versa.
- Sun Jan 28, 2018 9:38 pm
- Forum: Phase Changes & Related Calculations
- Topic: Endothermic or Exothermic
- Replies: 20
- Views: 2074
Re: Endothermic or Exothermic
Condensation is an exothermic process, as the water looses heat in order to turn from vapor to a liquid, which is released from the system into the surroundings
- Sun Jan 28, 2018 9:22 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3917546
Re: Post All Chemistry Jokes Here
What's the difference between chemistry and physics?
Physics always wants to be the big man !!!
Physics always wants to be the big man !!!
- Sat Jan 20, 2018 5:33 pm
- Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
- Topic: Heat "flow" [ENDORSED]
- Replies: 1
- Views: 323
Re: Heat "flow" [ENDORSED]
This implies the idea that heat is a tangible item opposed to an amount of energy (that seems most logical). But usually that is more of a reference to change in temperature, which we differentiate in chemistry
- Sat Jan 20, 2018 5:31 pm
- Forum: Calculating Standard Reaction Entropies (e.g. , Using Standard Molar Entropies)
- Topic: Entropy in Physics [ENDORSED]
- Replies: 1
- Views: 333
Entropy in Physics [ENDORSED]
In my physics class, we are discussing entropy and manipulating the ideal gas law on a macro scale. Is there any part of entropy that is specific to chemistry and may not apply in macro life or vice versa?
- Sat Jan 20, 2018 5:29 pm
- Forum: Phase Changes & Related Calculations
- Topic: Why does steam cause severe burns?
- Replies: 4
- Views: 471
Re: Why does steam cause severe burns?
100 degrees is the defining number that separates steam and water. At that point, it can increase to steam or decrease to become liquid water depending on the circumstances.
- Sun Dec 10, 2017 11:07 am
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3917546
Re: Post All Chemistry Jokes Here
Why did hydrogen get an alarm system?
Because he kept getting robbed and had reached his molar heat capacity
Because he kept getting robbed and had reached his molar heat capacity
- Sun Dec 10, 2017 11:04 am
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3917546
Re: Post All Chemistry Jokes Here
What did the biPOLAR ghost say?
BOOH!
BOOH!
- Sun Dec 03, 2017 7:00 pm
- Forum: Calculating pH or pOH for Strong & Weak Acids & Bases
- Topic: pH and pOH
- Replies: 10
- Views: 1424
Re: pH and pOH
pH is used more often because it is easier to measure the amount of H3O+ than of -OH
- Sun Dec 03, 2017 6:58 pm
- Forum: Calculating pH or pOH for Strong & Weak Acids & Bases
- Topic: pH of neutral water and temperature
- Replies: 2
- Views: 381
Re: pH of neutral water and temperature
The pH of water decreases as the temperature increases
- Sun Oct 29, 2017 7:31 pm
- Forum: Ionic & Covalent Bonds
- Topic: Study Habits [ENDORSED]
- Replies: 8
- Views: 1233
Re: Study Habits [ENDORSED]
Honestly Lavelle had the best videos to student and do well on the quizzes, but I like crash course and Khan academy. #sticktothebasics
- Sun Oct 29, 2017 7:26 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3917546
Re: Post All Chemistry Jokes Here
What do you get when you have 10^-12 of Gallo?
Pico De Gallo >:)
Pico De Gallo >:)
- Sat Oct 14, 2017 5:02 pm
- Forum: Photoelectric Effect
- Topic: Confused about photoelectric effect! [ENDORSED]
- Replies: 6
- Views: 989
Re: Confused about photoelectric effect! [ENDORSED]
The "shocking" discovery they found was that no matter how much they changed/increased the intensity of the light, If the light didn't have strong enough protons (individually) to pull out the electrons (individually), the electron would not leave the metal.
- Sat Oct 14, 2017 4:54 pm
- Forum: Quantum Numbers and The H-Atom
- Topic: radial nodes and nodal planes [ENDORSED]
- Replies: 3
- Views: 685
Re: radial nodes and nodal planes [ENDORSED]
It's has 1 radial node and have a modal plane perpendicular to its main axis