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Science, Tech, Math
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Science
Chemical Laws, Concepts, and Principles
Explore the major theories, laws, and principles of chemistry and learn how to apply them.
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Chemistry
Basics
Chemical Laws
Molecules
Periodic Table
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Scientific Method
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Physical Chemistry
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Famous Chemists
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Physics
Geology
Astronomy
Weather & Climate
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Learn About Malleability and the Treatment of Metals
Review Gay-Lussac's Gas Law
What Is an Acid-Base Indicator?
The pH Level in Chemistry Distinguishes Acids From Alkalines
Do You Know How to Identify a Hypertonic Solution?
Understand What Reactivity Means in Chemistry
Chemiluminescence: What It Is and How It Works
Here's What an Acid Is in Chemistry
Know What a Strong Acid Is in Chemistry
Combustion: Definition and Equation
Scientific Explanation of Why Ice Floats
What Are Colligative Properties?
What Are the Different Types of Corrosion?
What Is the Aufbau Principle?
Surprising Facts About the Atomic Nucleus
Understand Chemical Kinetics and Rate of Reaction
What a Chemical Change Is and How to Recognize It
Understand What Solubility Means in Chemistry
Know What a Dependent Variable Is in Science
Use Avogadro's Law To Find Volume of a Gas
Everything You Need to Know About Saturated Solutions in Chemistry
What Is a pH Indicator?
What Is a Limiting Reactant? Review Your Chemistry Concepts
What Is a Lewis Structure? Definition and Example
Here's What Trends Ionic Radius Follow in the Periodic Table
What Is a Heterogenous Mixture? Get a Clear Definition and Examples
Combined Gas Law Definition and Examples
What Is a Base in Chemistry?
Here's How to Use the Boyle's Law Formula for Ideal Gases
What Is a Coenzyme? Definition and Examples
Know What Isotopes Are in Chemistry
What Are Electron Domains and How Do They Predict Geometry?
What You Need to Know About Electronegativity and Why It Matters
Definition of Plasma, the 4th State of Matter
What Is an Alkoxide?
Chemistry Basics: What Is a Buffer?
Definition and Examples of a Polar Bond in Chemistry
Understand What Oxidation Means in Chemistry
What Enthalpy Means in Science
What Is a Word Equation?
4 Ways That Chemical Weathering Changes Rock
Do You Know What a Chemical Element Is?
What Is an Indicator in Chemistry?
What Is an Acetate? Metabolism and Hangovers
What Mass Spectrometry Is and How It Works
Exactly How Poisonous Is Carbon Dioxide?
What's an Element's Atomic Number?
Understand the Bronsted Lowry Theory of Acids and Bases
Here Are the Different Methods of Corrosion Prevention for Metals
All About Newton's First, Second and Third Laws of Motion
Learn About Beer's Law
Know the Density of Air at STP
What You Need to Know about Hydrogen Bonding
Here's What Concentration Means in Chemistry
What Is an Amino Acid? Definition and Examples
What Is a Reversible Reaction? Review Your Chemistry Concepts
Hygoscopic vs. Hydroscopic
Esters Are Essential Chemical Compounds You Can Find Everywhere
Here's What the Equivalence Point Means in Chemistry
What Is an Emulsion? Definition and Examples
What an Empirical Formula Is and How to Find It
Learn What a Dipole Is in Chemistry and Physics
Here's What a Coordination Number Is in Chemistry
What Are Van der Waals Forces?
What Is a Precipitate in Chemistry? Here's What You Need to Know
What Is a Net Ionic Equation? Review Your Chemistry Concepts
What Is Ionization Energy?
What Are Electrostatic Forces?
What You Need to Know About Fractional Distillation
What You Need to Know About the Rydberg Formula and How to Use It
What Is the Null Hypothesis? Definition and Examples
What Is a Double Displacement Reaction?
What Is Stoichiometry?
Decantation Is a Scientific Process Using Gravity and Glassware
Atomic Radius Measures the Size of an Atom, but It's Imprecise
What It Means When Something Crystallizes
A Look at the Law of Reflection and How Wavefronts Work in Physics
What Is Electron Affinity?
What Is a Balanced Equation in Chemistry?
What Is Gamma Radiation?
How to Draw Lewis Structures or Electron Dot Structures
Rate Constant in Chemistry: Definition and Equation
How to Solve a Charles' Gas Law Problem
What Corrosive Means in Chemistry
What Is an Ion? Definition and Examples
What Is Fusion? It Depends on the Science
What Spectroscopy Is and How It's Different From Spectrometry
What You Need to Know About Hydrolysis
What Is a Polymer? Definition and Examples
What Is Gravimetric Analysis in Chemistry?
What Is Water, According to Chemistry's Definition?
What Is Transmutation? Definition and Examples
What Is an Aliphatic Hydrocarbon? Review Your Chemistry Concepts
Do Antimatter and Exotic Atoms Really Exist?
Understand What Activated Charcoal Is and How It Works
Definition of Precipitation Reaction
What Is Mass Percentage in Chemistry? Definition and Examples
What Is Catalysis and How Does It Work?
Use Boyle's Law to Find the Volume of a Gas
How Celsius Is Used to Measure the Temperature
What Is a Peroxide?
What Is an Azeotrope?
What Is the Ideal Gas Law? Review Your Chemistry Concepts
Isomer Definition and Examples in Chemistry
What Is a Glycosidic Bond?
The Definition of a Solid, as the Term Is Used in the Sciences
What Is Absolute Zero in Science?
3 Steps to Writing Balanced Chemical Equations
What Is a Spontaneous Process?
What Is an Orbital in Chemistry?
What London Dispersion Forces Are and How They Work
What Are Physical Changes in Chemistry?
Definition and Examples of Cohesion in Chemistry
A Covalent Bond in Chemistry Is a Link Between Two Atoms or Ions
What's the Definition of a Liquid in Chemistry?
The Definition of Hydrophobic With Examples
Here's How to Understand Saturation in Chemical Solutions
Know the Definition of Saponification
Do You Know How to Use Ionic Equations in Chemistry?
Here's How You Define Specific Heat Capacity
Understand What Normality Means in Chemistry
Independent Variable Definition and Examples
What Is Gay-Lussac's Law in Chemistry?
What Is a Chemical Property? Ask a Chemistry Teacher
What Is a Family on the Periodic Table?
What Is Surface Tension? Definition and Causes
What Is Molar Heat Capacity? Review Your Chemistry Concepts
What You Need Know About Zeta Potential
Understand the Pauli Exclusion Principle
Learn What Distillation Means in Chemistry
What Spectator Ions Are and Why They Are Important
Here's What the Inductive Effect Means in Chemistry
Chemistry Terminology: Definition of pOH
What Does Adsorption Mean in Chemistry?
Chemistry Concepts: Percent Yield
What a Dipole Moment Is and Why It Matters
Learn About Primary and Secondary Standards in Chemistry
Definition of Effective Nuclear Charge
What's the Difference Between STP and Standard State Conditions?
What Is a Weak Acid?
Understand Le Chatelier's Principle in Chemistry
Calculate Root Mean Square Velocity of Gas Particles
The Major Laws of Chemistry
How to Calculate the Density of a Gas
Understanding Electrical, Thermal, and Sound Conductors
Chemistry Basics: What Is pKa?
What's the Mole Ratio in a Chemical Reaction?
Review Your Chemistry Concepts: Formula Mass
How Dissociation Reactions Work in Chemistry
A Nonpolar Molecule Has No Positive or Negative Poles
Chemistry Definition of Gas Constant (R)
What Is the Law of Conservation of Mass?
What Is Quantitative Analysis in Chemistry?
Learn the Solubility Rules for Inorganic Compounds
What Is a Quantum Number?
Learn What Charge Means in Science
What Is a Product in Chemistry?
Understand Electrical Conductivity
What Is Reduction in Chemistry?
How to Balance Redox Reactions
What Is the Principal Energy Level?
Learn What Aqueous Means in Chemistry
What the Aufbau Principle Means in Chemistry
What Is Electroplating?
What Is Paramagnetism?
What Is Capillary Action?
Understand the Tyndall Effect in Chemistry
How to Use Water Gas
What Is a Universal Solvent?
Understand the Law of Constant Composition in Chemistry
What Is a Weak Electrolyte?
What Is a Conjugate Base?
What Is a Physical Property in Chemistry?
What Is a Pure Substance in Chemistry?
What Is an Intensive Property?
What Is a Combustion Reaction in Chemistry?
5 Properties Exhibited in Chemical Solutions
What Is a Reactant in Chemistry?
The Boiling Point in Chemistry Is Affected by Atmospheric Pressure
What Is an Amide? Definition and Examples
What Is Gibbs Free Energy in Chemistry?
How to Define a Gas in Chemistry
What Ultraviolet Radiation Is and What It Does
What Is Periodicity? Review Your Chemistry Concepts
What Is an Aryl Group in Chemistry?
How and Why Do Metals Corrode?
What Is a Valence Electron? Review Your Chemistry Concepts
Qualitative Analysis Reveals Nonnumerical Information on a Specimen
Heavy Metal Means Something Different in Chemistry
What Is an Atomic Mass Unit or AMU?
Chemistry 101: How Do Particles Move in Diffusion?
What an Activated Complex Means in Chemistry
Here's What Sublimation Means in Chemistry
How to Perform the Mohs Test to Determine Hardness of Rock or Mineral
The Different Meanings and Use of Conjugate in Science
When and How Is Steam Distillation Used in Chemistry?
What Is Atomic Weight? Here's What You Should Know
Know the Element Composition of the Earth's Crust
What Is an Oxidant? Definition and Examples
Review the Ideal Gas Law With This Chemistry Sample Problem
Why Is the Carbon Cycle Important?
Law of Conservation of Energy: Energy Is Neither Created Nor Destroyed
Relative Uncertainty Definition and Calculation
What Is Internal Energy?
What Is Hydrolysis? Chemistry Definition
What Is the Carboxyl Group in Chemistry?
What Is an Arrhenius Acid? Review Your Chemistry Concepts
What Is Titrant? Review Your Chemistry Concepts
What Is the Definition of Potential Energy?
What Is an Aqueous Solution? Chemistry Definition and Example
Know the Formula for Charles' Law
What Is Molecular Weight? Chemistry Definition
What an Isolated System Means in Science
What Is a Joule? - Chemistry Definition
Understand What Homogeneous Means in Chemistry
Know Which Elements Are Main Group Elements
What Is Percent Composition?
What Is Diamagnetism? Definition and Examples
What Is the Faraday Constant?
You Won't Turn Into Spider Man: Learn What "Radioactive" Really Means
Do You Know How Pressure Is Defined in Chemistry?
What Is a Polar Molecule?
What Is an Adulterant?
This Term Defines the 3-D Space Occupied by a Liquid, Solid, or Gas
3 Ways To Increase the Pressure of a Gas
How a Manometer Can Help Monitor Your Health
What Is Wave-Particle Duality?
Definition of Roasting in Chemistry
Understand What Normal Boiling Point Means
What Is a Single-Displacement Reaction? Definition and Examples
Symbol of a Chemical Element - Reading the Periodic Table
How the Period Law Relates to the Periodic Table in Chemistry
What do they mean when they say it's a natural law?
Know the Rules for Assigning Oxidation Numbers
What Is a Dehydration Reaction?
What Is an Excess Reactant?
What an Excited State Means in Chemistry
What Is a Closed System in Thermodynamics?
What State of Matter Is Fire or Flame?
What Is an Element? Definition and Examples
Definition of Corrosion
What Does Partial Pressure Mean?
Names and Uses of 10 Gases
A Solute Is a Substance That Is Dissolved in a Solution
What Is an Extensive Property Is in Chemistry
What Is a Decomposition Reaction?
What Is the Definition of Matter?
What Is the Strongest Acid? Probably not What You Think
What Is Elasticity?
What Is a Monomer in Chemistry?
What Is a Universal Indicator in Chemistry
What Relative Density Means in Chemistry
What Is pKb in Chemistry?
Know the Conjugate Acid Definition in Chemistry
Atomic Volume: What It Is and How to Calculate It
The Chemical Composition of Air
Understand What Frequency Means in Science
What Is Boyle's Law? Review Your Chemistry Concepts
What a Double Bond Means in Chemistry
What Dynamic Equilibrium Means in Chemistry
What Does Exothermic Mean?
A Complete Guide to Graham's Formula for Diffusion and Effusion
What Is a Wavelength?
What Is a Solvent in Chemistry?
What Are Naphthenes?
Basic Solution Definition
A Delocalized Electron Defined in Chemistry
Dissolve Definition in Chemistry
What Is Raoult's Law?
What Is a UN ID Number? Definition and Examples
What Are the 4 Most Abundant Gases in Earth's Atmosphere?
What Does Ductile Mean?
The Definition of Disproportionation in Chemistry
What a Conversion Factor Is and How to Use It
Aliphatic Compound Definition and Examples
Review Your Chemistry Concepts: What Is a Covalent Compound?
What Is Relative Error?
What Is a Monoprotic Acid in Chemistry?
Photon Definition
What Is Graham's Law in Chemistry?
Defining the Electron
Radiation Definition and Examples
Understand What Normal Concentration Means
What Does Dilute Mean in Chemistry?
What Is Kinetic Energy?
What Is a Displacement Reaction in Chemistry?
Learn What a Standard Hydrogen Electrode Is in Chemistry?
What Is the de Broglie Equation?
Common Examples of Natural and Synthetic Polymers
What Is the Steric Number?
How to Define a Pi Bond in Chemistry
What Is a Surfactant?
Measurement Definition in Science
How Can You Calculate the Rate of Metal Corrosion?
What Is an Oxidizing Agent?
A Volatile Substance in Chemistry Easily Turns to Vapor
What Is Atomic Mass or Atomic Weight?
What Is Electromagnetic Radiation?
Endothermic Definition
What Does Insoluble Mean?
What Amphoteric Oxides Are in Chemistry
What Is the Most Ideal Gas?
What Is a Chemical Symbol?
What Is a Neutron?
What Does Saturated Mean in Chemistry?
How Spectrum and Spectra Are Used in Science
What Temperature Is Room Temperature?
What Is PSI?
What Is a Polyatomic Ion?
What Is Enthalpy Change?
What Is the Law of Definite Proportions?
Know What a Strong Base Is in Chemistry
Learn What a Bronsted-Lowry Acid Is in Chemistry
What Isoelectronic Means in Chemistry
What Does Phase Mean in Chemistry?
What Is a Phase Diagram?
Chemistry Glossary Definition of Chemical
What Is a Mercapto Group?
Find the Root Mean Square Velocity of Gas Particles
See Triboluminescence in Quartz (It's Easy)
Angular Momentum Quantum Number Definition
What Is the Formula for the Combined Gas Law
What Ether Means in Chemistry
What Is Valence Shell Electron Pair Repulsion Theory?
What Is Mass Number? Definition and Examples
What Is a Weak Base?
Understand the Difference Between Diffusion and Effusion
This Can Tell You Which Substance Is Used in a Chemical Reaction
Understanding Valance in Chemistry
What Is Potential Difference?
What Is a Polyprotic Acid in Chemistry?
What Is the Van der Waals Radius in Chemistry?
What Is an Oxyacid in Chemistry?
What Is an Atmosphere?
Learn the Definition of Coagulation
What Is an Electron Cloud?
What Does Absorbance Mean in Chemistry?
What Is an Equilibrium Constant?
Understand Dalton's Law of Partial Pressures
What Does 'Amphoteric' Mean in Chemistry?
What Formal Charge Means in Chemistry
A Condensed Formula Indicates the Bonds Between Atoms in a Molecule
Your Chemistry Study Guide for Gases
Graham's Law with a Sample Chemistry Problem
What Octane Rating Means
Understand What a Substrate Is in Chemistry
What Is a Kilopascal?
Periodic Trend Definition
What a Barometer Is and How It Works
What Is a Molecular Equation?
Learn the Definition and Different Types of a Chemical Formula
What Is Avogadro's Number?
IUPAC Definition (Chemistry)
Know the Definition of Charles's Law
What Is a Hydronium Ion?
What Is Electrolysis?
What Is a Phase Change?
Double Replacement Reaction Definition and Examples
What Is a Chemical Compound?
What Is the Cannizzaro Reaction?
How Is a Crystal Defined in Chemistry?
What Is the Principal Quantum Number?
What Free Energy Means in Science
What Is the Definition of an Emulsifier in Chemistry?
What Is a Mineral Acid? Definition and List
What Is the Definition of Effervescence in Chemistry?
What an Amalgam Is and Its Uses
What Is Aether? Here's the Meaning in Science
How Cis-Trans Isomers Work
Chemistry Basics: What Is an Anion?
What Does PPB Mean in Chemistry?
What Mass Defect Means in Physics and Chemistry
What Does Immiscible Mean in Chemistry?
Do You Know What Foam Is According to Chemistry Standards?
Understand Coulomb's Law in Science
What Is Avogadro's Law?
What Is a Free Radical in Chemistry?
What Is Bond Energy?
What Nonvolatile Means in Chemistry
What Is a Zwitterion?
Catenation Definition
What Water of Crystallization Means in Chemistry
What Is a Polynuclear Aromatic Hydrocarbon?
What Is an Alkali Metal?
What Is a Microliter?
What Is the Common-Ion Effect?
What Is a Strong Electrolyte?
What Is a Meter? Definition and Calculations
What Is a Reaction Rate in Chemistry?
What Is Volume/Volume Percentage?
Is Diamond a Conductor?
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