Chemistry 1331 Study guides, Class notes & Summaries
Looking for the best study guides, study notes and summaries about Chemistry 1331? On this page you'll find 12 study documents about Chemistry 1331.
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![Chemistry 1331 UPDATED Exam Questions and CORRECT Answers](/docpics/5340266/6647b488cf852_5340266_121_171.jpeg)
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Chemistry 1331 UPDATED Exam Questions and CORRECT Answers
- Exam (elaborations) • 22 pages • 2024
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True value - The accepted value for a measurement accomplished by repeating 
measurement or theoretically from first principles 
Accuracy - How close a measurement is to the true value 
Precision - How well multiple measurements agree with one another 
Least sig figs - Rules for mathematical operations: 
When multiplying or dividing the answer always has the same number of sig figs as the 
calculation with the _____ 
Least decimal places - Rules for mathematical operations: 
When adding or sub...
![Chemistry 1331 TOP Study Guide Exam Questions and CORRECT Answers](/docpics/5340260/6647b44c3ce1a_5340260_121_171.jpeg)
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Chemistry 1331 TOP Study Guide Exam Questions and CORRECT Answers
- Exam (elaborations) • 22 pages • 2024
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All of them - what measured quantity have uncertainity? 
Certain digits - Digits which are not estimated 
Uncertain digits - Digits which must be estimated 
True value - The accepted value for a measurement accomplished by repeating 
measurement or theoretically from first principles 
Accuracy - How close a measurement is to the true value 
Precision - How well multiple measurements agree with one another 
Least sig figs - Rules for mathematical operations:
![Chemistry 1331 TOP Forecasted Exam Questions and CORRECT Answers](/docpics/5340285/6647b4d1d4df8_5340285_121_171.jpeg)
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Chemistry 1331 TOP Forecasted Exam Questions and CORRECT Answers
- Exam (elaborations) • 16 pages • 2024
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VSEPR - Valence shell electron repulsion: place the electron around the central atom as 
far from each other as possible 
Electron-group arrangement - The 3-D geometric shape that the bonding and 
nonbonding electron occupy 
Molecular shape - The 3D shape that only the bonded atoms occupy, 
i.e. What the molecule "looks like" 
AXmEn notation - A=central atom
![Chemistry 1331 Certification Exam Questions and CORRECT Answers](/docpics/5340272/6647b48b83864_5340272_121_171.jpeg)
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Chemistry 1331 Certification Exam Questions and CORRECT Answers
- Exam (elaborations) • 13 pages • 2024
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Mixtures - Variable Composition 
Pure Substances - Constant Composition 
Homogenous Mixture - A mixture in which the composition is uniform throughout 
Heterogenous Mixture - A mixture with uneven distribution of different substances, 
solids, liquids, gases. 
Elements - A molecule composed of one kind of atom; cannot be broken into simpler 
units by chemical reactions. 
Compunds - A pure substance that contains two or more different elements in a fix 
porportion
![Chemistry 1331 Key PASSED Exam Questions and CORRECT Answers](/docpics/5340252/6647b44999990_5340252_121_171.jpeg)
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Chemistry 1331 Key PASSED Exam Questions and CORRECT Answers
- Exam (elaborations) • 11 pages • 2024
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Isotopes - Same number of protons and electrons but different number of neutrons. 
Therefore, different mass. 
Ex: N=18 A=18+17=35 => Cl-35 
N=20 A=20+17=35 =>Cl-37 
Relative mass=Atomic Mass - Weighted avg= sum(mass of isotope)(fraction of atoms) 
Ex: Chlorine 3/4 are Cl-35, 1/4 are Cl-37 
Atomic Mass=(35*.75)+(37*.25)=35.5 
Identify - Alkali metals (H not alkali metal) 
Alkaline earth metals 
Transition metals 
Triels/Icosagens: boron group 
Tetrels/Crystallogens: carbon group
![Chemistry 1331 UPDATED Exam Questions and CORRECT Answers](/docpics/5411892/664f068dd037f_5411892_121_171.jpeg)
-
Chemistry 1331 UPDATED Exam Questions and CORRECT Answers
- Exam (elaborations) • 22 pages • 2024
-
- $10.99
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True value - The accepted value for a measurement accomplished by repeating 
measurement or theoretically from first principles 
Accuracy - How close a measurement is to the true value 
Precision - How well multiple measurements agree with one another 
Least sig figs - Rules for mathematical operations: 
When multiplying or dividing the answer always has the same number of sig figs as the 
calculation with the _____ 
Least decimal places - Rules for mathematical operations: 
When adding or sub...
![Chemistry 1331 TOP Forecasted Exam Questions and CORRECT Answers](/docpics/5411871/664f064e84602_5411871_121_171.jpeg)
-
Chemistry 1331 TOP Forecasted Exam Questions and CORRECT Answers
- Exam (elaborations) • 16 pages • 2024
-
- $10.49
- + learn more
VSEPR - Valence shell electron repulsion: place the electron around the central atom as 
far from each other as possible 
Electron-group arrangement - The 3-D geometric shape that the bonding and 
nonbonding electron occupy 
Molecular shape - The 3D shape that only the bonded atoms occupy, 
i.e. What the molecule "looks like" 
AXmEn notation - A=central atom 
X= bonded atom 
E=lone pair 
m & n= how many of each you have 
X & E are referred to as "electron group" 
Steric number - The numbe...
![Chemistry 1331 TOP Study Guide Exam Questions and CORRECT Answers](/docpics/5411885/664f068b19451_5411885_121_171.jpeg)
-
Chemistry 1331 TOP Study Guide Exam Questions and CORRECT Answers
- Exam (elaborations) • 22 pages • 2024
-
- $10.49
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All of them - what measured quantity have uncertainity? 
Certain digits - Digits which are not estimated 
Uncertain digits - Digits which must be estimated 
True value - The accepted value for a measurement accomplished by repeating 
measurement or theoretically from first principles 
Accuracy - How close a measurement is to the true value 
Precision - How well multiple measurements agree with one another
![Chemistry 1331 Certification Exam Questions and CORRECT Answers](/docpics/5411877/664f065136444_5411877_121_171.jpeg)
-
Chemistry 1331 Certification Exam Questions and CORRECT Answers
- Exam (elaborations) • 13 pages • 2024
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- $10.99
- + learn more
Mixtures - Variable Composition 
Pure Substances - Constant Composition 
Homogenous Mixture - A mixture in which the composition is uniform throughout 
Heterogenous Mixture - A mixture with uneven distribution of different substances, 
solids, liquids, gases. 
Elements - A molecule composed of one kind of atom; cannot be broken into simpler 
units by chemical reactions. 
Compunds - A pure substance that contains two or more different elements in a fix 
porportion
![Chemistry 1331 Key PASSED Exam Questions and CORRECT Answers](/docpics/5411865/664f060d284f5_5411865_121_171.jpeg)
-
Chemistry 1331 Key PASSED Exam Questions and CORRECT Answers
- Exam (elaborations) • 11 pages • 2024
-
- $10.49
- + learn more
Isotopes - Same number of protons and electrons but different number of neutrons. 
Therefore, different mass. 
Ex: N=18 A=18+17=35 => Cl-35 
N=20 A=20+17=35 =>Cl-37 
Relative mass=Atomic Mass - Weighted avg= sum(mass of isotope)(fraction of atoms) 
Ex: Chlorine 3/4 are Cl-35, 1/4 are Cl-37 
Atomic Mass=(35*.75)+(37*.25)=35.5 
Identify - Alkali metals (H not alkali metal) 
Alkaline earth metals 
Transition metals 
Triels/Icosagens: boron group 
Tetrels/Crystallogens: carbon group
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