Published: Thu, 20 Oct 2016 11:17:16 +0000
2016-10-20T11:17:16ZThe hippopotamus mystified ancient Greeks because it appeared to sweat blood. Here's the science of what's really going on.
2016-10-20T11:17:16ZHere are 10 facts about acids and bases to help you learn about acids, bases, and pH and complete your homework.
2016-10-20T11:17:16ZChemical changes occur when chemical reactions between substances form new products. Get examples of 10 chemical changes in everyday life.
2016-10-20T11:17:16ZPhysical changes involve a new form or shape of matter, but no chemical reaction. This is a list of 10 examples of physical changes.
2016-10-20T11:17:16ZCalculating concentration is a basic skill needed by chemistry students. This is a list of steps and examples to calculate the concentration of chemical solutions in percent composition by mass, volume percent, molarity, molality, and normality.
2016-10-20T11:17:16ZThe 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.
2016-10-20T11:17:16ZChemistry happens in the real world, not just a lab. Here are 10 examples of chemical reactions in everyday life.
2016-10-20T11:17:16ZThe difference between independent and dependent variables in a scientific experiment is which variable is being measured. Here's an explanation of how to tell these critical variables apart.
2016-10-20T11:17:16ZBaking powder and baking soda both make baked goods rise. Learn the difference between baking powder and baking soda and how to make ingredient substitutions.
2016-10-20T11:17:16ZWhen you mix chemicals, you may get a chemical reaction. Learn about the different types of chemical reactions and get examples of the reaction types.
2016-10-20T11:17:16ZThis is a list of 10 examples of mixtures and an explanation of whether the mixture is heterogeneous or homogeneous.
2016-10-20T11:17:16ZHere are some examples of physical changes and chemical changes, along with an explanation of how you can tell physical and chemical changes apart.
2016-10-20T11:17:16ZHeterogeneous and homogeneous refer to mixtures of materials in chemistry. Learn about the difference between these mixtures and get examples of each type.
2016-10-20T11:17:16ZBaking powder and baking soda are leavening agents that help baked goods to rise. Here is exactly how to substitute baking powder and baking soda.
2016-10-20T11:17:16ZYou can teach yourself general chemistry with this step-by-step introduction to the basic concepts.
2016-10-20T11:17:16ZHere is an explanation of what chemical properties are, plus several examples of chemical properties of matter.
2016-10-20T11:17:16ZThese are properties of covalent compounds, also known as molecular compounds.
2016-10-20T11:17:16ZDNA and RNA both carry genetic information, but there are differences between them. This is a comparison of the differences between DNA versus RNA.
2016-10-20T11:17:16ZpH 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.
2016-10-20T11:17:16ZIt's easy to make mood ring slime that changes colors according to temperature. Here's a safe and simple thermochromic slime recipe to try.
2016-10-20T11:17:16ZBorax 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.
2016-10-20T11:17:16ZLearn how to classify inorganic chemical reactions into one of these four general categories.
2016-10-20T11:17:16ZThis is a collection of printable worksheets to practice balancing equations. The printable worksheets are provided in pdf format with separate answer keys.
2016-10-20T11:17:16ZGet examples of types of solids, liquids, and gases and learn about the transitions or phase changes between them.
2016-10-20T11:17:16ZHere is the nomenclature or naming rules for molecular compounds, plus examples of how to name the compounds.
2016-10-20T11:17:16ZDistillation 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.
2016-10-20T11:17:16ZLearn how formulas of ionic compounds work and see examples of compounds, their cations, and their anions.
2016-10-20T11:17:16ZHere's a reference pages that describes the major laws of chemistry.
2016-10-20T11:17:16ZHave you ever wondered how soap cleans? Here's an explanation of how soap works and an introduction to saponification, surfactants and emulsifiers.
2016-10-20T11:17:16ZThe 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.
2016-10-20T11:17:16ZHere'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.
2016-10-20T11:17:16ZGet the definitions for independent and dependent variables, examples of each variable, and the explanation for how to graph them.
2016-10-20T11:17:16ZHere are 5 common examples of chemical weathering, a collection of processes that change rocks via chemical reactions.
2016-10-20T11:17:16ZLearn about Lewis structures, also called electron dot structures and get step-by-step help drawing them.
2016-10-20T11:17:16ZMolarity 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.
2016-10-20T11:17:16ZThese are the element groups found in the periodic table of the elements. There are links to lists of elements within each group.
2016-10-20T11:17:16ZIsotopes are one form an element can take. This is the definition of an isotope, with examples.
2016-10-20T11:17:16ZPercent 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.
2016-10-20T11:17:16ZLab reports are an essential part of all laboratory courses and a significant part of your grade. Here's a format for a lab report you can use if you aren't sure what to write or need an explanation of what to include in the different parts of the report.
2016-10-20T11:17:16ZHave you ever wondered how much of your body is water? The percentage of water varies according to your age and gender. Here's a look at how much water is inside you.
2016-10-20T11:17:16ZThis is the definition of an independent variable, with examples. An independent variable is one of the key factors in a scientific experiment.
2016-10-20T11:17:16ZIn the melting ice experiment, make a colorful ice sculpture while learning about freezing point depression and erosion.
2016-10-20T11:17:16ZOrganic and inorganic compounds are the basis of chemistry. Here is the difference between organic and inorganic, plus examples of each type.
2016-10-20T11:17:16ZCations and anions are both ions, differing in the net electrical charge of the ion. Here is how to tell them apart.
2016-10-20T11:17:16ZLearn about the parts of the periodic table and how to use the table organization to predict element properties.
2016-10-20T11:17:16ZHere are ten multiple choice questions covering chemical formulas. Topics include simplest and molecular formulas, mass percent and naming compounds.
2016-10-20T11:17:16ZThe reaction between baking soda and vinegar is used in chemical volcanoes. Here is the equation for the reaction between baking soda and vinegar.
2016-10-20T11:17:16ZHere's an explanation of what STP is in chemistry and why it is useful, particularly when dealing with gases.
2016-10-20T11:17:16ZFind out whether the taurine in Red Bull came from bull semen and why the ingredient is in the drink in the first place.
2016-10-20T11:17:16ZThese are examples of covalent bonds and covalent compounds and an explanation of the type of atoms expected to form this type of chemical bond.
2016-10-20T11:17:16ZHere's how to calculate theoretical yield or how much product will be produced with given quantities of reactants.
2016-10-20T11:17:16ZThis is a list of the 6 steps of the scientific method, with explanations of each step of the process.
2016-10-20T11:17:16ZMixing bleach and ammonia is extremely dangerous, since toxic vapors will be produced. Here are the chemical reactions involved and first aid advice.
2016-10-20T11:17:16ZThese 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.
2016-10-20T11:17:16ZMixing bleach and vinegar is a bad idea because it produces toxic chlorine gas. Here's what you should know about mixing these chemicals.
2016-10-20T11:17:16ZAtoms are the smallest units of each element and the building blocks of matter. Here's how to make an atom model using common materials.
2016-10-20T11:17:16ZHave you ever wondered why atoms form chemical bonds with other atoms? Here's the scientific reason and an explanation of stability.
2016-10-20T11:17:16ZLooking 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.
2016-10-20T11:17:16ZThe gas constant or R is an important constant in the ideal gas law. This is the definition and value of the gas constant.
2016-10-20T11:17:16ZHere's an explanation of what stoichiometry is, the types of problems it covers, and why it is important to understand it.
2016-10-20T11:17:16ZThis is an alphabetical list of worked example chemistry problems. Printable worksheets with questions and answers are also provided.
2016-10-20T11:17:16ZThere are seven elements that form homonuclear diatomic molecules or simple molecules with their own atoms. This is a list of the 7 diatomic elements.
2016-10-20T11:17:16ZSulfuric 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.
2016-10-20T11:17:16ZThis 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.
2016-10-20T11:17:16ZIonic compounds form when elements share electrons. Here are examples of ionic bonds and ionic compounds.
2016-10-20T11:17:16ZRNA 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.
2016-10-20T11:17:16ZThe chemical elements are the building blocks of all matter. Here are interesting and essential element facts you need to know.
2016-10-20T11:17:16ZA calorimeter is a device used to measure heat flow in a chemical reaction. Learn about the coffee cup calorimeter and the bomb calorimeter.
2016-10-20T11:17:16ZHere are the first 20 elements of the periodic table, their atomic numbers, and the element symbols.
2016-10-20T11:17:16ZHave 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.
2016-10-20T11:17:16ZClick on this handy interactive periodic table of the elements to learn about periodic table trends and look up element facts and figures.
2016-10-20T11:17:16ZLearn 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
2016-10-20T11:17:16ZLearn about the chemistry behind the cleaning power of detergents, including how surfactants work and the types of molecules found in detergent.
2016-10-20T11:17:16ZLearn about the Bohr Model of the atom, which has an atom with a positively-charged nucleus orbited by negatively-charged electrons.
2016-10-20T11:17:16ZLearn how to distinguish between a chemical property and a physical property of matter. Here's the explanation of the distinction, with examples.
2016-10-20T11:17:16ZMass 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.
2016-10-20T11:17:16ZThis 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.
2016-10-20T11:17:16ZIf you take chemistry, you need to know about moles. Find out what a mole is and why this unit is used in chemistry.
2016-10-20T11:17:16ZA pure substance or chemical substance is homogeneous with constant properties throughout the sample. Here are examples of pure substances.
2016-10-20T11:17:16ZThe chemical volcano is the classic science fair project. This step-by-step recipe will show you how to make your own baking soda volcano.
2016-10-20T11:17:16ZYour carved pumpkin or jack o lantern doesn't have to rot or mold before Halloween! See how to preserve a pumpkin so it will last weeks and not days.
2016-10-20T11:17:16ZThe elements are the basis for all matter. Learn the one and two letter symbols for the chemical elements of the periodic table using this handy list.
2016-10-20T11:17:16ZThis is the definition of pure substance along with examples of things that are pure substances (and ones that aren't).
2016-10-20T11:17:16ZChemistry is a fascinating science, full of unusual trivia! Here are some fun and interesting chemistry facts for you.
2016-10-20T11:17:16ZThe 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.
2016-10-20T11:17:16ZAt what temperature does water boil? What determines the boiling point of water? Here's the answer to this common question.
2016-10-20T11:17:16ZBorax is the common name of sodium borate decahydrate. Learn the chemistry of borax, how it cleans, and how to use it safely.
2016-10-20T11:17:16ZThe periodic table organizes the elements according to their periodic properties. Find 10 periodic table facts that are interesting and informative.
2016-10-20T11:17:16ZBalancing chemical equations is a key chemistry skill. Use these step by step instructions to write and balance chemical equations.
2016-10-20T11:17:16ZIonic and covalent bonds hold molecules together. Learn to distinguish between ionic and covalent bonds, and find whether a bond is polar or nonpolar.
2016-10-20T11:17:16ZElements may be classified as either metals or nonmetals based on their properties. Here's a look at the differences between the metals and nonmetals.
2016-10-20T11:17:16ZLearn why the periodic is important and how it is used as a vital tool in chemistry.
2016-10-20T11:17:16ZThis is a list of materials that glow under ultraviolet or black light because they contain fluorescent or phosphorescent molecules.
2016-10-20T11:17:16ZDownload or print these PNG and PDF printable periodic tables to help work chemistry problems or to predict properties of the elements.
2016-10-20T11:17:16ZThis is the definition of polar bond as the term is used in chemistry, with examples of molecules that have polar bonds.
2016-10-20T11:17:16ZFind out what alum is and the uses of alum.
2016-10-20T11:17:16ZHere's a list of the elements, in alphabetical order according to their IUPAC names.
2016-10-20T11:17:16ZLearn about the periodic properties or trends in the periodic table of the elements. This is an explanation of periodicity and quick summary of trends.
2016-10-20T11:17:16ZAre you confused by all the numbers on a periodic table? Here's a look at what they mean and where to find important numbers on the table.
2016-10-20T11:17:16ZThis is a list of strong and weak acids, with names, structures, and how to tell them apart.