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Preview: About.com Chemistry: Most Popular Articles

About.com Chemistry: Most Popular Articles



These articles are the most popular over the last month.



Published: Tue, 21 Feb 2017 11:16:16 +0000

 



10 Facts About Acids and Bases

2017-02-21T11:16:16Z

Here are 10 facts about acids and bases to help you learn about acids, bases, and pH and complete your homework.



Know the Difference Between Baking Powder &...

2017-02-21T11:16:16Z

Baking powder and baking soda make baked goods rise. Learn the difference between them and how to make ingredient substitutions.



10 Examples of Chemical Changes We Experience...

2017-02-21T11:16:16Z

Chemical changes occur when chemical reactions between substances form new products. Get examples of 10 chemical changes in everyday life.



How to Calculate the Concentration of a...

2017-02-21T11:16:16Z

See how to calculate the concentration of a chemical solution in percent composition by mass, volume percent, molarity, molality, and normality.



Easy Ways To Substitute Baking Powder and...

2017-02-21T11:16:16Z

Baking powder and baking soda are leavening agents that help baked goods to rise. Here is exactly how to substitute baking powder and baking soda.



3 Ways To Calculate Atomic Mass

2017-02-21T11:16:16Z

The atomic mass or atomic weight of an element is a weighted average of the isotopes. Here are 3 simple ways to calculate atomic mass of an element.



10 Examples of Chemical Reactions in Everyday...

2017-02-21T11:16:16Z

Chemistry happens in the real world, not just a lab. Here are 10 examples of chemical reactions in everyday life.



Get Printable Worksheets To Practice Balancing...

2017-02-21T11:16:16Z

This is a collection of printable worksheets to practice balancing equations. The printable worksheets are provided in pdf format with separate answer keys.



Know the Types of Chemical Reactions (With...

2017-02-21T11:16:16Z

When you mix chemicals, you may get a chemical reaction. Learn about the different types of chemical reactions and get examples of the reaction types.



10 Examples of Mixtures

2017-02-21T11:16:16Z

This is a list of 10 examples of mixtures and an explanation of whether the mixture is heterogeneous or homogeneous.



10 Examples of Physical Changes

2017-02-21T11:16:16Z

Physical changes involve a new form or shape of matter, but no chemical reaction. This is a list of 10 examples of physical changes.



Learn the Properties and Characteristic of...

2017-02-21T11:16:16Z

These are properties of covalent compounds, also known as molecular compounds.



Heterogeneous and Homogeneous Mixtures: What's...

2017-02-21T11:16:16Z

Heterogeneous and homogeneous are types of mixtures in chemistry. Learn about the difference between these mixtures and get examples of each type.



Know the Differences Between DNA and RNA

2017-02-21T11:16:16Z

DNA and RNA both carry genetic information, but there are differences between them. This is a comparison of the differences between DNA versus RNA.



Understand the Difference Between Independent...

2017-02-21T11:16:16Z

The difference between independent and dependent variables in an experiment is which variable is being measured. Here's how to tell them apart.



Easy Way To Grow Borax Crystal Snowflakes

2017-02-21T11:16:16Z

It's easy to grow your own sparkling clear or colored borax crystal snowflakes. Here's what you do.



Why Adding Salt Makes Coffee Taste Less Bitter

2017-02-21T11:16:16Z

Does adding salt to coffee reduce its bitterness? Here's an answer to this cooking chemistry question.



Understand How pH and pKa Are Related

2017-02-21T11:16:16Z

pH and pKa are ways to express strength of acids. Here's the relationship between the two values and how to use the Henderson-Hasselbalch equation.



Teach Yourself Chemistry

2017-02-21T11:16:16Z

You can teach yourself general chemistry with this step-by-step introduction to the basic concepts.



Learn About Lewis Structures or Electron Dot...

2017-02-21T11:16:16Z

Learn about Lewis structures, also called electron dot structures and get step-by-step help drawing them.



Learn What Chemical Properties Are and Get...

2017-02-21T11:16:16Z

Here is an explanation of what chemical properties are, plus several examples of chemical properties of matter.



How Formulas of Ionic Compounds Work

2017-02-21T11:16:16Z

Learn how formulas of ionic compounds work and see examples of compounds, their cations, and their anions.



What Borax Is and Where You Can You Get It

2017-02-21T11:16:16Z

Borax is a common household and commercial chemical. Here's a look at what borax is, some facts about borax and how you can get borax.



What Is an Isotope? Definition and Examples

2017-02-21T11:16:16Z

Isotopes are one form an element can take. This is the definition of an isotope, with examples.



How To Make Homemade Christmas Tree Food

2017-02-21T11:16:16Z

Keep your living Christmas tree alive. Here's how to make homemade Christmas tree food or cut flower preservative.



Examples of Chemical and Physical Changes

2017-02-21T11:16:16Z

Here are some examples of physical changes and chemical changes, along with an explanation of how you can tell physical and chemical changes apart.



Understand the Difference Between a Cation and...

2017-02-21T11:16:16Z

Cations and anions are both ions, differing in the net electrical charge of the ion. Here is how to tell them apart.



4 Types of Inorganic Chemical Reactions

2017-02-21T11:16:16Z

Learn how to classify inorganic chemical reactions into one of these four general categories.



Know the Major Laws of Chemistry

2017-02-21T11:16:16Z

Here's a reference pages that describes the major laws of chemistry.



How to Draw A Lewis Structure

2017-02-21T11:16:16Z

Drawing Lewis structures can be a straightforward process if the proper steps are followed. These instructions will show how to draw Lewis structures for molecules.



How to Make Homemade Rock Candy or Sugar Crystals

2017-02-21T11:16:16Z

These are step by step instructions for growing your own sugar crystals or rock candy, which you can eat!



How to Name Molecular or Covalent Compounds

2017-02-21T11:16:16Z

Here is the nomenclature or naming rules for molecular compounds, plus examples of how to name the compounds.



Simple Explanation of the Scientific Method Steps

2017-02-21T11:16:16Z

This is a list of the 6 steps of the scientific method, with explanations of each step of the process.



Ideal Gas Law Test Questions

2017-02-21T11:16:16Z

The ideal gas law is an important concept in chemistry. This is a collection of ten chemistry test questions and answers relating to ideal gas laws.



What Is the Freezing Point of Water?

2017-02-21T11:16:16Z

What is the freezing point of water or the melting point of water? Are the freezing and melting point the same? Here's the answer to these common questions.



Is It Okay To Drink Distilled Water?

2017-02-21T11:16:16Z

Distillation is one method of water purification. Is distilled water safe to drink or as good for you as other types of water? The answer depends on a few different factors.



Examples of Independent and Dependent Variables

2017-02-21T11:16:16Z

Get the definitions for independent and dependent variables, examples of each variable, and the explanation for how to graph them.



How Much of The Human Body Is Water?

2017-02-21T11:16:16Z

Have you ever wondered how much of your body is water? The percentage of water depends on age and gender. Here's how much water is inside you.



What STP Means in Chemistry

2017-02-21T11:16:16Z

Here's an explanation of what STP is in chemistry and why it is useful, particularly when dealing with gases.



These Are the Exceptions to the Octet Rule

2017-02-21T11:16:16Z

The octet rule is used to predict compound molecular structures . Here are the exceptions to the octet rule and how it applies to Lewis structures..



Examples of Chemical Weathering

2017-02-21T11:16:16Z

Here are 5 common examples of chemical weathering, a collection of processes that change rocks via chemical reactions.



Free PDF Chemistry Worksheets To Download or...

2017-02-21T11:16:16Z

Looking for free PDF chemistry worksheets that you can print? The answers to the questions are available on separate pages so you can fill them out and then check your work.



Can You Name the 7 Diatomic Elements?

2017-02-21T11:16:16Z

There are seven elements that form homonuclear diatomic molecules or simple molecules with their own atoms. This is a list of the 7 diatomic elements.



Independent Variable Definition and Examples

2017-02-21T11:16:16Z

This is the definition of an independent variable, with examples. An independent variable is one of the key factors in a scientific experiment.



10 Examples of Electrical Conductors and...

2017-02-21T11:16:16Z

This is a list of 10 examples of materials that are electrical conductors and insulators and an explanation of why some materials conduct better than others.



What's a Polar Bond in Chemistry? Definition...

2017-02-21T11:16:16Z

This is the definition of polar bond as the term is used in chemistry, with examples of molecules that have polar bonds.



What Are the Different Element Groups in the...

2017-02-21T11:16:16Z

These are the element groups found in the periodic table of the elements. There are links to lists of elements within each group.



Why Atoms Form Chemical Bonds

2017-02-21T11:16:16Z

Have you ever wondered why atoms form chemical bonds with other atoms? Here's the scientific reason and an explanation of stability.



10 Types of Solids, Liquids, and Gases

2017-02-21T11:16:16Z

Get examples of types of solids, liquids, and gases and learn about the transitions or phase changes between them.



Ways To Make an Atom Model

2017-02-21T11:16:16Z

Atoms are the smallest units of each element and the building blocks of matter. Here's how to make an atom model using common materials.



Why You Shouldn't Mix Bleach and Ammonia

2017-02-21T11:16:16Z

Mixing bleach and ammonia is extremely dangerous, since toxic vapors will be produced. Here are the chemical reactions involved and first aid advice.



Understand Coffee Cup Calorimetry and Bomb...

2017-02-21T11:16:16Z

A calorimeter is a device used to measure heat flow in a chemical reaction. Learn about the coffee cup calorimeter and the bomb calorimeter.



Equation for the Baking Soda and Vinegar Reaction

2017-02-21T11:16:16Z

The reaction between baking soda and vinegar is used in chemical volcanoes. Here is the equation for the reaction between baking soda and vinegar.



Why the Sea Is Salty (Yet Most Lakes Are Not)

2017-02-21T11:16:16Z

Have you ever wondered why the ocean is salty and why most lakes are not? Here's a look at what makes the sea salty and its chemical composition.



What Is a Synthesis Reaction in Chemistry?...

2017-02-21T11:16:16Z

Here is the definition, explanation, and examples of a synthesis reaction or direct combination reaction.



Chemical Formulas Practice Test Questions

2017-02-21T11:16:16Z

Here are ten multiple choice questions covering chemical formulas. Topics include simplest and molecular formulas, mass percent and naming compounds.



What Are the Properties and Characteristics of...

2017-02-21T11:16:16Z

Here are the properties shared by the ionic compounds.



Elements by the Numbers From Hydrogen to...

2017-02-21T11:16:16Z

Here's a list of all of the chemical elements of the periodic table ordered by increasing atomic number. The names and element symbols are provided.



Know the Types of Solids

2017-02-21T11:16:16Z

There are 6 main types of solids, each characterized by specific properties and structures. Here is a look at how to categorize solids.



Understand the Difference Between Organic and...

2017-02-21T11:16:16Z

Organic and inorganic compounds are the basis of chemistry. Here is the difference between organic and inorganic, plus examples of each type.



What Temperature Does Water Boil?

2017-02-21T11:16:16Z

At what temperature does water boil? What determines the boiling point of water? Here's the answer to this common question.



Learn the Parts of the Periodic Table

2017-02-21T11:16:16Z

Learn about the parts of the periodic table and how to use the table organization to predict element properties.



10 Useful RNA Facts

2017-02-21T11:16:16Z

RNA or ribonucleic acid is used to translate instructions from DNA to make proteins in your body. Here are 10 interesting and fun facts about RNA.



Look Up Element Facts on the Clickable Periodic...

2017-02-21T11:16:16Z

Click on this handy interactive periodic table of the elements to learn about periodic table trends and look up element facts and figures.



Practice Chemistry with Worked Chemistry Problems

2017-02-21T11:16:16Z

This is an alphabetical list of worked example chemistry problems. Printable worksheets with questions and answers are also provided.



How to Make Non-toxic, Realistic Fake Snow

2017-02-21T11:16:16Z

You can make fake snow using a common polymer. The fake snow is non-toxic, feels cool to the touch, and looks similar to the real thing.



Is It Safe To Drink Bleach? Will It Kill You?

2017-02-21T11:16:16Z

Learn whether it's safe to drink bleach, what happens if you do, and if it can kill you. Learn whether drinking bleach can help you pass a drug test



Why You Shouldn't Mix Bleach and Vinegar

2017-02-21T11:16:16Z

Mixing bleach and vinegar is a bad idea because it produces toxic chlorine gas. Here's what you should know about mixing these chemicals.



How to Make Homemade Slime (Classic Recipe)

2017-02-21T11:16:16Z

This is a classic recipe for homemade slime. It's super-easy, plus I included tips for success.



What Is a Pure Substance? Definition and Examples

2017-02-21T11:16:16Z

This is the definition of pure substance along with examples of things that are pure substances (and ones that aren't).



What's the Difference Between Ionic and...

2017-02-21T11:16:16Z

Ionic and covalent bonds hold molecules together. Learn to distinguish between ionic and covalent bonds, and find whether a bond is polar or nonpolar.



Know the Difference Between Physical and...

2017-02-21T11:16:16Z

Learn how to distinguish between a chemical property and a physical property of matter. Here's the explanation of the distinction, with examples.



How To Make Sulfuric Acid at Home

2017-02-21T11:16:16Z

Sulfuric acid is a useful acid to have on hand for a variety of home chemistry projects. However, it is not easy to obtain. Fortunately, you can make it yourself.



Examples of Compounds with Ionic Bonds

2017-02-21T11:16:16Z

Ionic compounds form when elements share electrons. Here are examples of ionic bonds and ionic compounds.



Common Examples of Covalent Compounds

2017-02-21T11:16:16Z

These are examples of covalent bonds and covalent compounds and an explanation of the type of atoms expected to form this type of chemical bond.



Here's How to Write a Lab Report

2017-02-21T11:16:16Z

Lab reports are an essential part of all laboratory courses and a significant part of your grade. Here's a format for a lab report to use.



Essential Element Facts

2017-02-21T11:16:16Z

The chemical elements are the building blocks of all matter. Here are interesting and essential element facts you need to know.



Why Does Salt Melt Ice and Snow?

2017-02-21T11:16:16Z

If you live someplace cold, you have experienced salt on sidewalks and roads. Have you ever wondered why? Here's how salt melts ice and snow.



3 Steps to Writing Balanced Chemical Equations

2017-02-21T11:16:16Z

Balancing chemical equations is a key chemistry skill. Use these step by step instructions to write and balance chemical equations.



10 Interesting Periodic Table Facts

2017-02-21T11:16:16Z

The periodic table organizes the elements according to their periodic properties. Find 10 periodic table facts that are interesting and informative.



Quick Chemistry Facts About the Ideal Gas...

2017-02-21T11:16:16Z

The gas constant or R is an important constant in the ideal gas law. This is the definition and value of the gas constant.



An Easy Way to Calculate Molarity of a Solution

2017-02-21T11:16:16Z

Molarity is a unit of concentration measuring the number of moles of a solute per liter of solution. Here is how to calculate molarity of a solution.



Why Salt Melts Ice

2017-02-21T11:16:16Z

You sprinkle salt on an icy road or sidewalk. Here's how salt melts ice and how it relates to freezing point depression.



How to Calculate Mass Percent in Chemistry

2017-02-21T11:16:16Z

Mass percent composition of a molecule shows the amount each element in a molecule contributes to the total molecular mass. This step by step tutorial will show the method to determine the mass percent composition of a molecule.



How To Build a Classic Baking Soda Volcano

2017-02-21T11:16:16Z

The chemical volcano is the classic science fair project. This step-by-step recipe will show you how to make your own baking soda volcano.



Explanation of the Octet Rule

2017-02-21T11:16:16Z

The octet rule states that elements gain or lose electrons to attain an electron configuration of the nearest noble gas. Here is an explanation of how that works and why elements follow the octet rule.



Which Elements Are Radioactive?

2017-02-21T11:16:16Z

This is a list or table of elements that are radioactive. This list has the element name, most stable isotope and half-life of most stable isotope.



How To Balance Ionic Equations

2017-02-21T11:16:16Z

These are the steps to write a balanced net ionic equation. You'll learn how to balance any equation for mass and charge, plus there are examples.



Examples of 10 Balanced Chemical Equations

2017-02-21T11:16:16Z

Writing balanced chemical equations is essential for chemistry class. Here are examples of 10 balanced equations you can review or use for homework.



Know the 3 Types of RNA and Their Functions

2017-02-21T11:16:16Z

One common homework and test question asks you to name the three types of RNA and list their functions. Here's the answer.



Understand the Laws of Thermochemistry

2017-02-21T11:16:16Z

The laws of thermochemistry are used to describe the heat or energy flow of chemical reactions. Understanding the values of a reaction's enthalpy will help determine whether the reaction is endothermic or exothermic.



This Is How To Calculate Percent Error

2017-02-21T11:16:16Z

Percent error or percentage error is the difference between an approximate or measured value and an exact or known value. Here is how to calculate percent error.



Review the Periodic Properties of Elements

2017-02-21T11:16:16Z

Learn about the periodic properties or trends in the periodic table of the elements. This is an explanation of periodicity and quick summary of trends.



Melt Ice for Science in this fun Experiment

2017-02-21T11:16:16Z

In the melting ice experiment, make a colorful ice sculpture while learning about freezing point depression and erosion.



How Does Borax Work as a Cleaner?

2017-02-21T11:16:16Z

Borax is the common name of sodium borate decahydrate. Learn the chemistry of borax, how it cleans, and how to use it safely.



How Quantum Numbers and Electron Orbitals Work

2017-02-21T11:16:16Z

The properties of an atom's electron configuration are described by four quantum numbers: n, l, m, and s. Here's what the quantum numbers mean.



Facts About the 5 Element Families

2017-02-21T11:16:16Z

Elements may be categorized according to element families. This is an explanation of element families, with descriptions of each one.



Factors that Affect Chemical Reaction Rates

2017-02-21T11:16:16Z

Several factors affect the rate at which chemical reactions proceed. Understanding these factors will help you predict the direction and speed of a chemical reaction.



What Does pH Stand For?

2017-02-21T11:16:16Z

Have you ever wondered what pH stands for or where the term originated? Here is the answer to the question and a look at the history of the pH scale.



Understand the Difference Between Accuracy and...

2017-02-21T11:16:16Z

This is an explanation of the difference between accuracy and precision. Examples of accuracy and precision are also provided.