TEAS Science Review: Balancing chemical reactions [Higher volume]

A re-post of the review video with higher volume.
My other TEAS and A&P study books and vidoes:
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...
ATI TEAS READING review and practice questions: Overview and Lesson 1. Summarizing a complex text: • ATI TEAS READING revie...
ATI TEAS READING review and practice questions: Lesson 2 Infer logical conclusions: • ATI TEAS READING revie...
ATI TEAS READING review and practice questions: Lesson 3 Follow given directions: • ATI TEAS READING revie...
ATI TEAS READING review and practice questions: Lesson 4 Recognize events in sequence: • ATI TEAS READING revie...
ATI TEAS READING review and practice questions: Lesson 5 Identify info from a printed communication: • ATI TEAS READING revie...
ATI TEAS READING review and practice questions: Lesson 6 Identify info from infographic: • ATI TEAS READING revie...
ATI TEAS READING review and practice questions: Lesson 2 Infer logical conclusions PART 2: • ATI TEAS READING revie...
ATI TEAS READING review/practice questions: Lesson 7 Identify facts, opinons, biases and stereotypes: • ATI TEAS READING revie...
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
• 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...

[@davidparmley2753]

Your videos are very, very helpful. You have a gift for teaching. I plan on watching all in preparation for the TEAS 7.

[@professoryu5571]

Awesome - I'm really glad to hear that these videos are helpful to you! And thank you for the compliment - it made my day, yay! Much appreciated! :-)

[@user-gu6tt5gu6e]

how do you know which ones are ions

[@professoryu5571]

Good question. Normally if a compound is in the aquesous form and it has metal element (s), like Pb or Na in Example 2, the different parts (elements) of that compound are likely to be ions. Again, in that example, Na+ and Pb2+ are positive ions (metals usually form positive ions because they lose electons to other atoms) whereas Cl- and NO3- are negative ions. This is imporant in the atom/ion/periodic table/chemical bond chapter. But in balancing chemical reactions, whehter you know they are ions are not is not important. Just make sure that all atoms/ions are balanced - same number of a particular atom on both sides of the chemical reaction. Of course, you do need to treat polyatomic ions as one unit, like "one atom" since they typically remain the same polyatomic ions before and after the reaction so you can think of it as one unit. Hope this helps. 😊

[@ashleykaelin2070]

Very helpful review!!

[@professoryu5571]

Thank you for letting me know! Happy studying :-)