Summary: Chemistry
- This + 400k other summaries
- A unique study and practice tool
- Never study anything twice again
- Get the grades you hope for
- 100% sure, 100% understanding
Read the summary and the most important questions on Chemistry
-
1.2 Powerpoints
This is a preview. There are 57 more flashcards available for chapter 1.2
Show more cards here -
What is the molecular formula of a compound?
- Represents the number of each type of atom.
- Consists of elemental symbols and subscripts.
- Illustrates the actual composition of the compound.
- Example: H2O shows 2 hydrogen, 1 oxygen.
-
What occupies the volume around the nucleus?
The volume around the nucleus is taken by:
- Orbiting electrons -
What helps the atom remain stable?
The core helps the atom remain stable. -
How can electron density in shells change?
Electron density can change by:
- Gaining or losing electrons -
What happens to electrons in terms of charge?
Electrons can be:- Lost or added
-
How do electrons in the outer shell relate to bonds?
Electrons determine the number of bonds:- Electrons in outer shell explain bonding capacity
- Lone pairs do not bind
- Lone pairs affect 3D structure
- Molecules can be formed
-
What is the bonding characteristic of lone pairs?
Lone pairs:- Usually do not bind to other elements
- Influence 3D molecular structure
-
Provide the molecular formula for acetylene.
Acetylene is represented as:- C2H2
- A hydrocarbon with 2 carbon atoms
-
What is a common structure of carbon in 3D molecules?
Tetrahedral structure leads to various shapes:- Halogens
- Hydrogen
- Simplified representations
-
What are halogens/hydrogen?
- Group 17 elements in the periodic table.
- Include fluorine, chlorine, bromine, iodine, and astatine.
- Highly reactive nonmetals.
- Hydrogen is a separate element, not a halogen.
- Higher grades + faster learning
- Never study anything twice
- 100% sure, 100% understanding
For my 1st exam I got a C. Then, I started looking for ways to learn better and I came across Study Smart. Since then I have scored a A+, A, A- and another A. I highly recommend it to everyone who wants to hear it. I am so happy with it!!
I was struggling to finish all my first-year subjects for 3 years. Then I discovered Study Smart, which helped me to finish all of them within 3 months.
Because of StudySmart, things are going well in many ways. Before, I always had study stress and no time for anything. Now I feel calm and confident (because of the program). I used to score a B, now I usually score an A or A+.
Hey Chris, I really want to thank you very much for developing the platform, I usually got around C for my exams, now I scored an A+, an A and a A- !!
Since using Study Smart, my average has increased significantly. I even completed a statistics course with a A+ while I'm bad at statistics. I took on extra courses this year, because of Study Smart. Thanks so much!
Ever since I started studying with StudySmart I passed all my exams !!! No more re-sits!! At first, I was happy with a pass and now I only get good grades. Many thanks!
I aced all the courses I studied with Study Smart. For law, I first scored a D, and now an A! I’m 100% sure that I’ll pass all the courses I study with Study Smart.
I always thought I studied well. My grades were fine. I could never have imagined that applying these study skills would have such a huge and direct impact on my grades, my speed and the pleasure I have in learning.
For the first time, I finally feel totally confident about the way I learn. I have the perfect overview and make great progress in terms of speed and the grades I get. Thanks, Chris!
I immediately started to enjoy learning again, and my grades soared. All of a sudden, everything went better. I highly recommend Study Smart to all students..
Being able to create my materials online made the process of studying so much smoother and quicker. I no longer have to spend a huge amount of my time on creating my summaries.
At first, my notes were a mess. Now I use Study Smart to take my notes in a perfectly structured way. It helps me to save a lot of time and do other things I enjoy.
Students that study with Study Smart get better grades. The system applies all the learning methods in such a way that both well-performing students and students who struggle perform much better.
Hi Chris, I would like to thank you very much. Last year I scored C on a course, and this year I got an A+ thanks to your method! Thank you very much!
The largest effect is that my child is more enthusiastic about school! Every parent wants their children to be happy at school, Study Smart made it happen.
In high school, I failed several exams, and that has really changed now. I actually needed this tool very much back then. Since I started studying with StudySmart, I haven't had any D's. My average score is now an A and those are results I would have never had in the past
With my old method, I passed only 3 out of 8 courses. Since I started taking my notes digitally in Study Smart, I have passed all my courses on the first try. For me, StudySmart takes away the stress of wondering if I will pass or not.
Thanks to StudySmart, I passed all my exams, and with better grades than before! On top of that, I have mastered a very good study method now, which I am confident will help me earn my degree.
