Comprehensive ATI TEAS Science Review Lecture: chemical reactions

My other TEAS/A&P review books and videos are listed below:
TEAS 7 Update Science: www.etsy.com/listing/14530102...
TEAS Science practice tests (3 complete tests with 159 carefully developed science questions)downloadable from Etsy: www.etsy.com/listing/11761165...
PPT slides for SCIENCE review videos (downloadable from Etsy): www.etsy.com/listing/11664689...
PPT slides for READING review videos (downloadable from Etsy): www.etsy.com/listing/12026894...
Human Anatomy Workbook for Students: Practice and Reinforce Your Knowledge of Anatomy (downloadable from Etsy): www.etsy.com/listing/11803983...
Balancing chemical reactions: • Video
Lesson 1: Tissues, Organs and Organ Systems ― • TEAS Science review In...
Lesson 2: Anatomical planes & terminology ― • TEAS Science review_An...
Lesson 3: The Integumentary System ― • TEAS Science review_In...
Lesson 4: The Skeletal System ―
• Comprehensive ATI TEAS... (Part 1)
• Comprehensive ATI TEAS... (Part 2)
Lesson 5: The Neuromuscular System ―
• TEAS Science review_Ne... (nervous system Part 1)
• TEAS Science review_Ne... (nervous system Part 2)
• Comprehensive ATI TEAS... (muscular system Part 1)
• Comprehensive ATI TEAS... (muscular system Part 2)
Lesson 6: The Cardiovascular System ―
• Comprehensive ATI TEAS... (Part 1)
• Comprehensive ATI TEAS... (Part 2)
• Comprehensive ATI TEAS... (Part 3)
Lesson 7: Blood ― • Comprehensive ATI TEAS...
Lesson 8: The Respiratory System ―
• Comprehensive ATI TEAS... (Part 1)
• Comprehensive ATI TEAS... (Part 2)
Lesson 9: The Immune System/The Lymphatic System ―
• Comprehensive ATI TEAS... (Part 1)
• Comprehensive ATI TEAS... (Part 2)
• Comprehensive ATI TEAS... (Part 3)
Lesson 10: The gastrointestinal system ―
• Comprehensive ATI TEAS... (Part 1)
• Comprehensive ATI TEAS... (Part 2)
Lesson 11: The Genitourinary System ― • Comprehensive ATI TEAS...
Lesson 12: The Reproductive System ― • Comprehensive ATI TEAS...
Lesson 13: The Endocrine System ― • Comprehensive ATI TEAS...
Lesson 14: The Cell ― • Comprehensive ATI TEAS...
Lesson 15: Macromolecules ― Slide 169
• Comprehensive ATI TEAS... (overview)
• Comprehensive ATI TEAS... (carbohydrates)
• Comprehensive ATI TEAS... (lipids)
• Comprehensive ATI TEAS... (proteins)
• Comprehensive ATI TEAS... (nucleic acids)
Lesson 16: Genetics: Chromosomes, Genes, and DNA ― • Comprehensive ATI TEAS...
Lesson 17: Mendel’s Law of Heredity ― • Comprehensive ATI TEAS...
• Comprehensive ATI TEAS...
Lesson 18: Basic atomic structure and the Periodic Table ― • Comprehensive ATI TEAS... • Comprehensive ATI TEAS...
Lesson 19: Properties of Substances ―
• Comprehensive ATI TEAS... (Part 1)
• Comprehensive ATI TEAS... (Part 2)
Lesson 20: States of Matter ― • Comprehensive ATI TEAS...
Lesson 21: Chemical Reactions ― • Comprehensive ATI TEAS...
Lesson 22: Scientific Measurements Using Laboratory Tools ― • Comprehensive ATI TEAS...
Lesson 23: Critique scientific explanation using logic and evidence ― • Comprehensive ATI TEAS...
Lesson 24: Explain relationship among events, objects, and processes ― • Comprehensive ATI TEAS...
Lesson 25: Analyze the design of scientific investigations ― • Comprehensive ATI TEAS...
TEAS/A&P practice question Part 1. Tissues, Organs, and Organ Systems: • Video
TEAS/A&P practice question Part 2. Anatomical Position and Anatomical Planes: • Video
TEAS/A&P practice question Part 3. Integumentary system: • Video
TEAS/A&P practice question Part 4. Skeletal system: • Video
TEAS/A&P practice question Part 5. Nervous system: • Video
TEAS/A&P practice question Part 6. Muscular system: • Video

[@jiaopeng6447]

Thank you, Dr. Yu!

[@professoryu5571]

You are very welcome! Thank you for the comment and please feel free to let me know if you have any questions 😊

[@graceliu3656]

Dr. Yu, Thanks for your videos. Do you have balance equation chimerical reaction . I do not know how to balance it .

[@professoryu5571]

Let me see if I can find some time next week. I know I should make a video on this topic but haven't found time to do it :(

[@professoryu5571]

Hi Grace! I found a good video teaching balancing chemical equations. I think the guy in the video explains things very well and I don't want you to wait for me to make a video in case you need to know this very soon. Here's the video link: kzbin.info/www/bejne/r3KWhY2AZ8qgbMk But if you still have questions after watching his video, let me know and I can then make a video address your question.

[@graceliu3656]

@@professoryu5571 Thank you very much. I really appreciated it.

[@ThuongTran-sb7yv]

Hello professor, I see a tiny mistake about the reaction of double replacement. Is that NaOH + CuSO4 -> Na2SO4 + Cu(OH)2 so we can balance the reaction instead of NaSO4 as you mentioned in the video? Thank you!

[@professoryu5571]

Good catch! Yes, it should be Na2SO4 with 2 Na, since Na is +1 and SO4 is -2. I totally skipped one sodium ion, lol. Thank you for bringing that to my attention. Really appreciate it! :-)

[@tasmin212]

Hello professor, I had a question regarding that electronegativity.... to tell electronegativity of an atom from a periodic table do we look at the number of valence shells? thank you

[@professoryu5571]

Good question! "The number of valence shells" may not be accurate because valence shell refers to the outermost shell of an atom and each atom can only have one valence shell. I think you meant number of electrons in valent shells. It would be better to look at a periodic table to determine which element/atom would have lower or higher electronegativity (the ablity to attact electrons). In general, an atom's electronegativity gets higher as you move to the right or move up in the periodic table. I found an image that uses the periodic table to show the trend of electronegativity of the elements with purple being low and red being high electronegativity: sciencenotes.org/list-of-electronegativity-values-of-the-elements/ So F, Cl, and O have higher electronegativity (I doubt that TEAS would use other less common high electronegativity elements). In cases where F, Cl, or O forms covalent bonds with other atoms, the resulting molecules would have polar covalent bonds and are generally water soluble (hydrophilic). For C and H, they have similar electronegativity (even though not the same) and the C-H bond is nonpolar covalent and molecules with lots of C-H are nonpolar/hydrophobic. Other covalent bonds involving H and pretty much other elements (such as N, F, O, Cl, S) would be polar because H is much weaker than other atoms in attacting electrons. Whenever two atoms of the same element form a covalent bond, it's usually nonpolar because they are equal in strength to pull electrons (electronegativity). Sorry the answer is a bit long. Hope it helps and let me know if you have further questions!

[@tasmin212]

@@professoryu5571 Thank you for the detailed explanation it helped me to clear up the misunderstandings I had with electronegativity

[@professoryu5571]

@@tasmin212 You are very welcome!

[@bangalybashir94]

There was question to balance equation on test

[@professoryu5571]

Hmm...interesting. The newest ATI study manual does not explicitly say that balancing chemical equations would be on the test (different than the previous study guide [3rd ed I believe]). Thank you for letting me know!! Maybe I will make a video on that.

[@bangalybashir94]

@@professoryu5571 there was question to balance and then another question ask what type of reaction overall you videos are detailed and helpful looking forward to passing I have higher when I retake

[@professoryu5571]

@@bangalybashir94 You will get a higher score! You can do it!

[@Carrmennxxx]

Dr. Yu, have you personally taken the TEAS or do you just go off the manual? I hear you mention a lot that you don't see a lot of xyz type of questions.

[@professoryu5571]

Great question! I have not done a real TEAS test since it costs money and I did not have time to actually sit there for a few hours to do it (LOL). But I have done one of ATI's online practice tests when I was teaching a night TEAS class. And of course, I have spent a lot of time reviewing their 3 versions of manuals.So my information is based on those. 😊

[@lynn3851]

Great videos, but I wish you have a better mic.

[@professoryu5571]

I agree! I wish I had a better mic too 🙂 If you go to the playlist tab and find the higher volume playlist, you will find vidoes with higher voice which are probably easier to hear...