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TEAS 7 Chemistry Exam 2024: Polyatomic Ions and Empirical Formulas Study Guide, Exams of Chemistry

A study guide for the teas 7 chemistry final exam 2024, focusing on polyatomic ions and empirical formulas. It covers the names, charges, and examples of common polyatomic ions such as ammonium, cyanide, carbonate, nitrate, and phosphate. Additionally, it explains the concepts of empirical formulas and molecular formulas, and the difference between nonelectrolytes and acids.

Typology: Exams

2023/2024

Available from 03/24/2024

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TEAS 7 Chemistry test 2 Final Exam 2024 study guide
1. Polyatomic atoms ions that contain more than 1 or 2 elements in the
atom.
usually the elements name of polyatomic atoms
end in ate or ite with the exception of hydroxide
and cyanide.
2. NH4+ (Polyatomic atoms) Ammonium
3. CN- Cyanide
4. CO3^2- Carbonate
5. NO3- Nitrate
6. PO4 3- Phosphate
7. OH- Hydroxide
8. CiO3- Chlorate
9. BrO3- Bromate
10. IO3- Iodate
11. SO4^2- Sulfate
12. Avogadro's number (NA)-number of particles in 1 mole
*6.022X10^23 mol-1
13. Group element 1 (alkali have an ionic charge of +1
metals) charges? elements included are
H+(Hydrogen)
Li +(lithium)
Na+ ( Sodium)
K +(Potassium)
Rb+ ( Rubidium)
Cs+ ( Caesium)
Fr+ ( Francium)
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TEAS 7 Chemistry test 2 Final Exam 2024 study guide

  1. Polyatomic atoms ions that contain more than 1 or 2 elements in the atom. usually the elements name of polyatomic atoms end in ate or ite with the exception of hydroxide and cyanide.
  2. NH4+ (Polyatomic atoms) Ammonium
  3. CN- Cyanide
  4. CO3^2- Carbonate
  5. NO3- Nitrate
  6. PO4 3- Phosphate
  7. OH- Hydroxide
  8. CiO3- Chlorate
  9. BrO3- Bromate
  10. IO3- Iodate
  11. SO4^2- Sulfate
  12. Avogadro's number (NA) -number of particles in 1 mole *6.022X10^23 mol-
  13. Group element 1 (alkali have an ionic charge of + metals) charges? elements included are H+(Hydrogen) Li +(lithium) Na+ ( Sodium) K +(Potassium) Rb+ ( Rubidium) Cs+ ( Caesium) Fr+ ( Francium) 1 / 2
  1. Group element 2 (alkali Ionic charge of + earth metals) charges? Elements included are Be^2+ (Beryllium) Mg^2+ (magnesium) Ca^2+ (calcium) Sr^2+(Strontium) Ba^2+(barium) Ra^2+(Radium)
  2. Group element 13 (metal- both covalent and ionic charge of + loids) charges? Elements included are B^3+ ( Boron is the only covalent compound in this group) Al^3+ Aluminum (ionic) Ga^3 Gallium (ionic) In^3+ Indium (ionic) TI^3+Thallium (ionic)
  3. empirical formula The simplest whole number ratio of atoms of each example: ethane : C4H8 element present in a compound. 4 c/ 8 h = basically dividing the compound to get the small- 4/4= 1c est ratio possible. 8/4=2 H example: ethane : C4H 1/2 ratio empirical formu- 4 c/ 8 h = 4 la turns out to be CH
  4. Molecular formula regular formula , mentions # of atoms in a com- pound. ex C4H
  5. noneletrolyte dissolves in water but produces no ions
  6. acid produces a hydrogen ion (H+) when dissolved in water 2 / 2