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1. Matter and Measurements(0)

What is Chemistry?
(0)

The Scientific Method
(0)

Classification of Matter
(0)

States of Matter
(0)

Physical & Chemical Changes
(0)

Chemical Properties
(0)

Physical Properties
(0)

Intensive vs. Extensive Properties
(0)

Temperature (Simplified)
(0)

Scientific Notation
(0)

SI Units (Simplified)
(0)

Metric Prefixes
(0)

Significant Figures (Simplified)
(0)

Significant Figures: Precision in Measurements
(0)

Significant Figures: In Calculations
(0)

Conversion Factors (Simplified)
(0)

Dimensional Analysis
(0)

Density
(0)

Specific Gravity
(0)

Density of Geometric Objects
(0)

Density of Non-Geometric Objects
(0)

2. Atoms and the Periodic Table(0)

The Atom (Simplified)
(0)

Subatomic Particles (Simplified)
(0)

Isotopes
(0)

Ions (Simplified)
(0)

Atomic Mass (Simplified)
(0)

Atomic Mass (Conceptual)
(0)

Periodic Table: Element Symbols
(0)

Periodic Table: Classifications
(0)

Periodic Table: Group Names
(0)

Periodic Table: Representative Elements & Transition Metals
(0)

Periodic Table: Elemental Forms (Simplified)
(0)

Periodic Table: Phases (Simplified)
(0)

Law of Definite Proportions
(0)

Atomic Theory
(0)

Rutherford Gold Foil Experiment
(0)

Wavelength and Frequency (Simplified)
(0)

Electromagnetic Spectrum (Simplified)
(0)

Bohr Model (Simplified)
(0)

Emission Spectrum (Simplified)
(0)

Electronic Structure
(0)

Electronic Structure: Shells
(0)

Electronic Structure: Subshells
(0)

Electronic Structure: Orbitals
(0)

Electronic Structure: Electron Spin
(0)

Electronic Structure: Number of Electrons
(0)

The Electron Configuration (Simplified)
(0)

Electron Arrangements
(0)

The Electron Configuration: Condensed
(0)

The Electron Configuration: Exceptions (Simplified)
(0)

Ions and the Octet Rule
(0)

Ions and the Octet Rule (Simplified)
(0)

Valence Electrons of Elements (Simplified)
(0)

Lewis Dot Symbols (Simplified)
(0)

Periodic Trend: Metallic Character
(0)

Periodic Trend: Atomic Radius (Simplified)
(0)

3. Ionic Compounds(0)

Periodic Table: Main Group Element Charges
(0)

Periodic Table: Transition Metal Charges
(0)

Periodic Trend: Ionic Radius (Simplified)
(0)

Periodic Trend: Ranking Ionic Radii
(0)

Periodic Trend: Ionization Energy (Simplified)
(0)

Periodic Trend: Electron Affinity (Simplified)
(0)

Ionic Bonding
(0)

Naming Monoatomic Cations
(0)

Naming Monoatomic Anions
(0)

Polyatomic Ions
(0)

Naming Ionic Compounds
(0)

Writing Formula Units of Ionic Compounds
(0)

Naming Ionic Hydrates
(0)

Naming Acids
(0)

4. Molecular Compounds(0)

Covalent Bonds
(0)

Naming Binary Molecular Compounds
(0)

Molecular Models
(0)

Bonding Preferences
(0)

Lewis Dot Structures: Neutral Compounds (Simplified)
(0)

Multiple Bonds
(0)

Multiple Bonds (Simplified)
(0)

Lewis Dot Structures: Multiple Bonds
(0)

Lewis Dot Structures: Ions (Simplified)
(0)

Lewis Dot Structures: Exceptions (Simplified)
(0)

Resonance Structures (Simplified)
(0)

Valence Shell Electron Pair Repulsion Theory (Simplified)
(0)

Electron Geometry (Simplified)
(0)

Molecular Geometry (Simplified)
(0)

Bond Angles (Simplified)
(0)

Dipole Moment (Simplified)
(0)

Molecular Polarity (Simplified)
(0)

5. Classification & Balancing of Chemical Reactions(0)

Chemical Reaction: Chemical Change
(0)

Law of Conservation of Mass
(0)

Balancing Chemical Equations (Simplified)
(0)

Solubility Rules
(0)

Molecular Equations
(0)

Types of Chemical Reactions
(0)

Complete Ionic Equations
(0)

Calculate Oxidation Numbers
(0)

Redox Reactions
(0)

Spontaneous Redox Reactions
(0)

Balancing Redox Reactions: Acidic Solutions
(0)

Balancing Redox Reactions: Basic Solutions
(0)

Balancing Redox Reactions (Simplified)
(0)

Galvanic Cell (Simplified)
(0)

6. Chemical Reactions & Quantities(0)

Empirical Formula
(0)

Molecular Formula
(0)

Calculating Molar Mass
(0)

Mole Concept
(0)

Mass Percent
(0)

Stoichiometry
(0)

Limiting Reagent
(0)

Percent Yield
(0)

7. Energy, Rate and Equilibrium(0)

Nature of Energy
(0)

First Law of Thermodynamics
(0)

Endothermic & Exothermic Reactions
(0)

Bond Energy
(0)

Thermochemical Equations
(0)

Heat Capacity
(0)

Thermal Equilibrium (Simplified)
(0)

Hess's Law
(0)

Rate of Reaction
(0)

Energy Diagrams
(0)

Chemical Equilibrium
(0)

The Equilibrium Constant
(0)

Le Chatelier's Principle
(0)

Solubility Product Constant (Ksp)
(0)

Spontaneous vs Nonspontaneous Reactions
(0)

Entropy (Simplified)
(0)

Gibbs Free Energy (Simplified)
(0)

8. Gases, Liquids and Solids(0)

Pressure Units
(0)

Kinetic Molecular Theory
(0)

The Ideal Gas Law
(0)

The Ideal Gas Law Derivations
(0)

The Ideal Gas Law Applications
(0)

Chemistry Gas Laws
(0)

Chemistry Gas Laws: Combined Gas Law
(0)

Standard Temperature and Pressure
(0)

Dalton's Law: Partial Pressure (Simplified)
(0)

Gas Stoichiometry
(0)

Intermolecular Forces (Simplified)
(0)

Intermolecular Forces and Physical Properties
(0)

Atomic, Ionic and Molecular Solids
(0)

Heating and Cooling Curves
(0)

9. Solutions(0)

Solutions
(0)

Solubility and Intermolecular Forces
(0)

Solutions: Mass Percent
(0)

Percent Concentrations
(0)

Molarity
(0)

Osmolarity
(0)

Parts per Million (ppm)
(0)

Solubility: Temperature Effect
(0)

Intro to Henry's Law
(0)

Henry's Law Calculations
(0)

Dilutions
(0)

Solution Stoichiometry
(0)

Electrolytes (Simplified)
(0)

Equivalents
(0)

Molality
(0)

The Colligative Properties
(0)

Boiling Point Elevation
(0)

Freezing Point Depression
(0)

Osmosis
(0)

Osmotic Pressure
(0)

Vapor Pressure Lowering (Raoult's Law)
(0)

10. Acids and Bases(0)

Acid-Base Introduction
(0)

Arrhenius Acid and Base
(0)

Bronsted Lowry Acid and Base
(0)

Acid and Base Strength
(0)

Ka and Kb
(0)

The pH Scale
(0)

Auto-Ionization
(0)

pH of Strong Acids and Bases
(0)

Acid-Base Equivalents
(0)

Acid-Base Reactions
(0)

Gas Evolution Equations (Simplified)
(0)

Ionic Salts (Simplified)
(0)

Buffers
(0)

Henderson-Hasselbalch Equation
(0)

Strong Acid Strong Base Titrations (Simplified)
(0)

11. Nuclear Chemistry(0)

Types of Radiation
(0)

Alpha Decay
(0)

Beta Decay
(0)

Gamma Emission
(0)

Electron Capture
(0)

Positron Emission
(0)

Radioactive Half-Life
(0)

Measuring Radioactivity
(0)

BONUS: Lab Techniques and Procedures(0)

Laboratory Materials
(0)

Experimental Error
(0)

Distillation & Floatation
(0)

Chromatography
(0)

Filtration and Evaporation
(0)

Extraction
(0)

Test for Ions and Gases
(0)

BONUS: Mathematical Operations and Functions(0)

Multiplication and Division Operations
(0)

Addition and Subtraction Operations
(0)

Power and Root Functions
(0)

Power and Root Functions
(0)

The Quadratic Formula
(0)

12. Introduction to Organic Chemistry(0)

Introduction to Organic Chemistry
(0)

Structural Formula
(0)

Condensed Formula
(0)

Skeletal Formula
(0)

Functional Groups in Chemistry
(0)

Naming Alkanes
(0)

The Alkyl Groups
(0)

Naming Alkanes with Substituents
(0)

Naming Cyclic Alkanes
(0)

Naming Other Substituents
(0)

Alkane Reactions
(0)

13. Alkenes, Alkynes, and Aromatic Compounds(0)

Spatial Orientation of Bonds
(0)

Intro to Hydrocarbons
(0)

Isomers
(0)

Chirality
(0)

Naming Alkenes
(0)

Naming Alkynes
(0)

Intro to Addition Reactions
(0)

Halogenation Reaction
(0)

Hydrogenation Reaction
(0)

Hydrohalogenation Reaction
(0)

Hydration Reaction
(0)

Naming Benzene
(0)

Benzene Reactions
(0)

14. Compounds with Oxygen or Sulfur(0)

Naming Alcohols
(0)

Naming Ethers
(0)

Naming Thiols
(0)

Alcohol Reactions: Dehydration Reactions
(0)

Intro to Redox Reactions
(0)

Alcohol Reactions: Oxidation Reactions
(0)

Reactions of Thiols
(0)

15. Aldehydes and Ketones(0)

Naming Ketones
(0)

Naming Aldehydes
(0)

Tollens' and Benedict's Test
(0)

Reduction of Aldehydes and Ketones
(0)

Hemiacetal and Acetal Formation
(0)

16. Carboxylic Acids and Their Derivatives(0)

Naming Carboxylic Acids
(0)

Naming Esters
(0)

Naming Amides
(0)

Carboxylic Acid Reactions
(0)

Ester Reactions: Esterification
(0)

Ester Reactions: Acid-Catalyzed Hydrolysis
(0)

Ester Reactions: Saponification
(0)

Amide Formation
(0)

Amide Hydrolysis
(0)

17. Amines(0)

Classifying Amines
(0)

Naming Amines
(0)

Naming Ammonium Salts
(0)

Functional Group Priorities
(0)

Amine Reactions
(0)

18. Amino Acids and Proteins(0)

Intro to Amino Acids
(0)

Amino Acid Three Letter Codes
(0)

Amino Acid One Letter Codes
(0)

Amino Acid Classifications
(0)

Peptides
(0)

Primary Protein Structure
(0)

Secondary Protein Structure
(0)

Tertiary Protein Structure
(0)

Quaternary Protein Structure
(0)

Summary of Protein Structure
(0)

19. Enzymes(0)

Intro to Enzymes
(0)

Enzyme Classification
(0)

Enzyme-Substrate Complex
(0)

Models of Enzyme Action
(0)

Factors Affecting Enzyme Activity
(0)

Enzyme Inhibition
(0)

Enzyme Regulation: Allosteric Control
(0)

Enzyme Regulation: Feedback Control
(0)

Enzyme Regulation: Covalent Modification
(0)

20. Carbohydrates(0)

Intro to Carbohydrates
(0)

Classification of Carbohydrates
(0)

Fischer Projections
(0)

Enantiomers vs Diastereomers
(0)

D vs L Enantiomers
(0)

Cyclic Hemiacetals
(0)

Intro to Haworth Projections
(0)

Cyclic Structures of Monosaccharides
(0)

Mutarotation
(0)

Reduction of Monosaccharides
(0)

Oxidation of Monosaccharides
(0)

Glycosidic Linkage
(0)

Disaccharides
(0)

Polysaccharides
(0)

21. The Generation of Biochemical Energy(0)

Intro to Metabolism
(0)

ATP and Energy
(0)

Intro to Cofactors
(0)

Intro to Coenzymes
(0)

Coenzymes in Metabolism
(0)

Energy Production In Biochemical Pathways
(0)

Intro to Citric Acid Cycle
(0)

The Citric Acid Cycle
(0)

Electron Transport Chain
(0)

Oxidative Phosphorylation
(0)

Aerobic Respiration Summary
(0)

22. Carbohydrate Metabolism(0)

Intro to Carbohydrate Metabolism
(0)

Intro to Glycolysis
(0)

Glycolysis
(0)

Glycolysis Summary
(0)

Pyruvate Oxidation
(0)

Anaerobic Respiration
(0)

Total Energy from Glucose
(0)

Intro to Gluconeogenesis
(0)

Gluconeogenesis
(0)

23. Lipids(0)

Intro to Lipids
(0)

Fatty Acids
(0)

Physical Properties of Fatty Acids
(0)

Waxes
(0)

Triacylglycerols
(0)

Triacylglycerol Reactions: Hydrogenation
(0)

Triacylglycerol Reactions: Hydrolysis
(0)

Triacylglycerol Reactions: Oxidation
(0)

Glycerophospholipids
(0)

Sphingomyelins
(0)

Steroids
(0)

Cell Membranes
(0)

Membrane Transport
(0)

24. Lipid Metabolism(0)

Intro to Lipid Digestion
(0)

Digestion of Lipids
(0)

Lipoproteins for Transport
(0)

Glycerol Metabolism
(0)

Intro to Fatty Acid Oxidation
(0)

Oxidation of Fatty Acids
(0)

Total Energy from Fatty Acids
(0)

Ketone Bodies
(0)

Summary of Lipid Metabolism
(0)

25. Protein and Amino Acid Metabolism(0)

Digestion of Proteins
(0)

Intro to Amino Acid Catabolism
(0)

Amino Acid Catabolism: Amino Group
(0)

Amino Acid Catabolism: Carbon Atoms
(0)

Intro to Urea Cycle
(0)

The Urea Cycle
(0)

Review of Metabolism
(0)

26. Nucleic Acids and Protein Synthesis(0)

Intro to Nucleic Acids
(0)

Nitrogenous Bases
(0)

Nucleoside and Nucleotide Formation
(0)

Naming Nucleosides and Nucleotides
(0)

Phosphodiester Bond Formation
(0)

Primary Structure of Nucleic Acids
(0)

Base Pairing
(0)

DNA Double Helix
(0)

Intro to DNA Replication
(0)

Steps of DNA Replication
(0)

Types of RNA
(0)

Overview of Protein Synthesis
(0)

Transcription: mRNA Synthesis
(0)

Processing of pre-mRNA
(0)

The Genetic Code
(0)

Introduction to Translation
(0)

Translation: Protein Synthesis
(0)

3. Ionic Compounds

Periodic Trend: Electron Affinity (Simplified)

3. Ionic Compounds

Periodic Trend: Electron Affinity (Simplified): Videos & Practice Problems

Video Lessons Practice Worksheet

Periodic Trend: Electron Affinity (Simplified) Practice Problems

20 problems

Problem 1Multiple Choice

Arrange the following elements in order of the most negative electron affinity to the least negative electron affinity:

B, Mg, O, Si

Problem 2Multiple Choice

What is electron affinity?

Problem 3Multiple Choice

Why do noble gases generally have low or zero electron affinities?

Problem 4Multiple Choice

What is the general trend of electron affinity across a period?

Problem 5Multiple Choice

How does electron configuration stability affect an element's electron affinity?

Problem 6Multiple Choice

Which element is an exception to the general electron affinity trend and why?

Problem 7Multiple Choice

Evaluate the role of electronic stability in the electron affinities of noble gases.

Problem 8Multiple Choice

Why is electron affinity not as straightforward as other periodic trends?

Problem 9Multiple Choice

If the electron affinity of chlorine is -349 kJ/mol, what is the change in energy when an electron is added to a chlorine atom?

Problem 10Multiple Choice

Which element is more likely to accept an additional electron based on electron affinity, sulfur or oxygen?

Problem 11Multiple Choice

How does high electron affinity influence an element's chemical reactivity?

Problem 12Multiple Choice

What does a negative value of electron affinity indicate?

Problem 13Multiple Choice

Why does nitrogen have a low electron affinity compared to oxygen?

Problem 14Multiple Choice

Which group of elements typically has the highest electron affinity?

Problem 15Multiple Choice

How does the electron affinity of oxygen compare to that of sulfur, and what does this indicate about their ability to accept electrons?

Problem 16Multiple Choice

Explain why beryllium is an exception to the general trend of electron affinity in its period.

Problem 17Multiple Choice

Why do elements with full or half-filled subshells often have lower electron affinities?

Problem 18Multiple Choice

What makes electron affinity trends complex compared to atomic radius trends?

Problem 19Multiple Choice

If the electron affinity of sulfur is -200 kJ/mol, what is the change in energy when an electron is added to a sulfur atom?

Problem 20Multiple Choice

Between fluorine and chlorine, which element is more likely to accept an additional electron, and why?

Periodic Trend: Ionization Energy (Simplified) Practice Problems Ionic Bonding Practice Problems

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