TEAS 7 Describe chemical reactions Part 2 more practice questions

More practice questions on chemical reactions.
Balancing chemical reactions [Higher volume]: • TEAS Science Review: B...
Please watch the TEAS 6 video series first (see channel page for the playlist or links below) to get the majority of the science information. Then move on to TEAS 6 vs 7 video series to learn about the updates and changes in TEAS 7.
Other TEAS 6 vs 7 videos can be found in the playlist on the channel landing page.
My TEAS and A&P study books and vidoes:
TEAS 7 Changes_Science: www.etsy.com/listing/14530102...
TEAS Science practice tests (3 complete tests with 159 carefully developed science questions): www.etsy.com/listing/11761165...
PPT slides for SCIENCE review videos: www.etsy.com/listing/11664689...
PPT slides for READING review videos: www.etsy.com/listing/12026894...
Human Anatomy Workbook for Students: Practice and Reinforce Your Knowledge of Anatomy: www.etsy.com/listing/11803983...
Introduction and Lesson 1 Body organization/organ systems [Higher volume]: • [Higher volume] ATI TE...
Anatomical position/ planes/body cavities [Higher volume]: • [Higher volume] ATI TE...
Integumentary system [ Higher volume]: • [Higher volume] ATI TE...
Skeletal system Part 1 [Higher volume]: • [Higher volume] ATI TE...
Skeletal system Part 2 [Higher volume]: • [Higher volume] ATI TE...
Cardiovascular System 1_overview and heart structures[Higher volume]: • [Higher volume] ATI TE...
Cardiovascular System 2_Trace blood flow&coronary circuit [Higher volume]: • [Higher volume] ATI TE...
Cardiovascular System 3 Heart conduction system&diseases [Higher volume]: • [Higher volume] ATI TE...
Blood [Higher volume]: • [Higher volume] ATI TE...
Lymphatic system [Higher volume]: • TEAS Science_Lymphatic...
Nervous system part 1 [Higher volume]: • [Higher volume] ATI TE...
Nervous system part 2 [Higher volume]: • [Higher volume] ATI TE...
Muscular System Part 1 [Higher volume]: • [Higher volume] ATI TE...
Muscular System Part 2 [Higher volume]: • [Higher volume] ATI TE...
Immune System Part 1 [higher volume]: • TEAS Science Review: I...
Immune System Part 2. Adaptive defenses [higher volume]: • TEAS Science Review: I...
Immune system Part 3. Active&Passive_practice problems [higher volume]: • TEAS Science Review: I...
Bone repair [higher volume]: • TEAS Science review: B...
Digestive sytem Part 1: • TEAS Science Review: D...
Digestive sytem Part 2: • TEAS Science Review: D...
Endocrine system: • TEAS Science Review: E...
Urinary system: • TEAS Science Review: U...
Reproductive system: • TEAS Science Review: R...
The cell: • TEAS Science Review: T...
Macromolecules-Overview chemical reactions [Higher volume]: • TEAS Science: Macromol...
Macromolecules-Carbohydrates [Higher volume]: • TEAS Science: Macromol...
Macromolecules-Lipid [Higher volume]: • TEAS Science: Macromol...
Macromolecules-Protein [Higher volume]: • TEAS Science: Macromol...
Macromolecules-nucleic acids [Higher volume]: • TEAS Science: Macromol...
DNA genes and chromosomes [Higher volume]: • TEAS Science: DNA gene...
Mendel's law of heredity Part 1 [Higher volume]: • TEAS Science: Mendel's...
Mendel's law of heredity Part 2 [Higher volume]: • TEAS review Mendel's l...
Atomic structure and periodic table Part 1[Higher volume]: • TEAS Science: Atomic s...
Atomic structure and periodic table Part 2[Higher volume]: • TEAS Science: Atomic s...
Chemical reactions [Higher volume]: • TEAS Science: chemical...
Balancing chemical reactions [Higher volume]: • TEAS Science Review: B...
States of matter [higher volume]: • TEAS Science: States o...
Scientific measurement and tools [higher volume]: • TEAS Science: Scientif...
Properties of substances Part 1 [Higher volume] • TEAS Science Review: P...
Properties of substances Part 2 diffusion and osmosis [Higher volume]: • TEAS Science: Properti...
Event Sequence and Analyze Experimental Design [higher volume]: • TEAS Science Review: E...

[@Urassaya-9527]

Thank you Professor Yu.

[@professoryu5571]

You are welcome! I hope it's helpful. Thank you for your comment :-)

[@Urassaya-9527]

@@professoryu5571 yes, it is really helpful.

[@Urassaya-9527]

@@professoryu5571 yes, it is very helpful.

[@professoryu5571]

@@Urassaya-9527 Fantastic! Thank you for letting me know :-)

[@jupiterlegaspi7528]

What is the key difference between question 1 and 2? Is it the word unlimited ?

[@professoryu5571]

Good question! Yes, "unlimited" is defnitely a difference between the two, because it indicates that Mg would be the limiting factor for how much O2 would be consumed and how much MgO would be generated. But the main purpose of the second question was to make you practice and get comfortable caculating the amout of a product or reactant when a known reactant is not a whole mole but half of a mole (or it could be 1/4 or 1/8 of a mole). I can certainly make question#2 a little hard by telling you there's only 4 g of oxygen, then you would have to decide which reactant has a smaller amount and would be the limiting factor for the reaction. In this case, 4g of oxygen would be 1/8 mole (4/32 = 1/8), less than half of Mg (half of 1/2 mole would be 1/4 mole). I used half of Mg because the ratio of Mg to O2 is 2:1 in the chemical reaction, so if you have 1/2 mole of Mg you would need 1/4 mole of O2. Therefore, in this case the calculation would be based on the amount of oxygen (limiting factor) instead of Mg. That said, I don't think TEAS would be this tricky so I'd say just assume that nothing is the limiting factor and all the reactants are in the proportion indicated by the chemical reaction coefficient, unless TEAS gives you something that suggests otherwise (small chance). Hope this helps. Great question! :-)