Published: Wed, 28 Sep 2016 11:16:08 +0000
2016-09-28T11:16:08ZFind out whether the taurine in Red Bull came from bull semen.
2016-09-28T11:16:08ZThe 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.
2016-09-28T11:16:08ZHere are 10 facts about acids and bases to help you learn about acids, bases, and pH and complete your homework.
2016-09-28T11:16:08ZChemical changes occur when chemical reactions between substances form new products. Get examples of 10 chemical changes in everyday life.
2016-09-28T11:16:08ZPhysical changes involve a new form or shape of matter, but no chemical reaction. This is a list of 10 examples of physical changes.
2016-09-28T11:16:08ZCalculating 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.
2016-09-28T11:16:08ZHeterogeneous and homogeneous refer to mixtures of materials in chemistry. Learn about the difference between these mixtures and get examples of each type.
2016-09-28T11:16:08ZThe 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.
2016-09-28T11:16:08ZThis is a list of 10 examples of mixtures and an explanation of whether the mixture is heterogeneous or homogeneous.
2016-09-28T11:16:08ZChemistry happens in the real world, not just a lab. Here are 10 examples of chemical reactions in everyday life.
2016-09-28T11:16:08ZBaking powder and baking soda both make baked goods rise. Learn the difference between baking powder and baking soda and how to make ingredient substitutions.
2016-09-28T11:16:08ZHere is an explanation of what chemical properties are, plus several examples of chemical properties of matter.
2016-09-28T11:16:08ZHere are some examples of physical changes and chemical changes, along with an explanation of how you can tell physical and chemical changes apart.
2016-09-28T11:16:08ZYou can teach yourself general chemistry with this step-by-step introduction to the basic concepts.
2016-09-28T11:16:08ZLearn whether ascorbic acid or vitamin C is an organic compound or an inorganic compound and how you can tell.
2016-09-28T11:16:08ZBaking powder and baking soda are leavening agents that help baked goods to rise. Here is exactly how to substitute baking powder and baking soda.
2016-09-28T11:16:08ZThis is a list of the 6 steps of the scientific method, with explanations of each step of the process.
2016-09-28T11:16:08ZGet examples of types of solids, liquids, and gases and learn about the transitions or phase changes between them.
2016-09-28T11:16:08ZThis is the definition of an independent variable, with examples. An independent variable is one of the key factors in a scientific experiment.
2016-09-28T11:16:08ZDNA and RNA both carry genetic information, but there are differences between them. This is a comparison of the differences between DNA versus RNA.
2016-09-28T11:16:08ZGet the definitions for independent and dependent variables, examples of each variable, and the explanation for how to graph them.
2016-09-28T11:16:08ZWhen you mix chemicals, you may get a chemical reaction. Learn about the different types of chemical reactions and get examples of the reaction types.
2016-09-28T11:16:08ZpH 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.
2016-09-28T11:16:08ZPercent 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.
2016-09-28T11:16:08ZThese are properties of covalent compounds, also known as molecular compounds.
2016-09-28T11:16:08ZIsotopes are one form an element can take. This is the definition of an isotope, with examples.
2016-09-28T11:16:08ZHere's a reference pages that describes the major laws of chemistry.
2016-09-28T11:16:08ZLearn how formulas of ionic compounds work and see examples of compounds, their cations, and their anions.
2016-09-28T11:16:08ZDistillation 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.
2016-09-28T11:16:08ZMixing bleach and ammonia is extremely dangerous, since toxic vapors will be produced. Here are the chemical reactions involved and first aid advice.
2016-09-28T11:16:08ZLab 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.
2016-09-28T11:16:08ZHere are 5 common examples of chemical weathering, a collection of processes that change rocks via chemical reactions.
2016-09-28T11:16:08ZBorax 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.
2016-09-28T11:16:08ZHere is the nomenclature or naming rules for molecular compounds, plus examples of how to name the compounds.
2016-09-28T11:16:08ZHere'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.
2016-09-28T11:16:08ZCations and anions are both ions. The difference between a cation and an anion is the net electrical charge of the ion. Here is how to tell them apart.
2016-09-28T11:16:08ZOrganic and inorganic compounds are the basis of chemistry. Here is the difference between organic and inorganic, plus examples of each type.
2016-09-28T11:16:08ZThese are the element groups found in the periodic table of the elements. There are links to lists of elements within each group.
2016-09-28T11:16:08ZMolarity 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.
2016-09-28T11:16:08ZLearn how to classify inorganic chemical reactions into one of these four general categories.
2016-09-28T11:16:08ZLearn how to distinguish between a chemical property and a physical property of matter. Here's the explanation of the distinction, with examples.
2016-09-28T11:16:08ZLearn about the difference between the control group and the experimental group in a scientific experiment, including positive and negative controls.
2016-09-28T11:16:08ZThis is the definition of pure substance along with examples of things that are pure substances (and ones that aren't).
2016-09-28T11:16:08ZHave 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.
2016-09-28T11:16:08ZHere are ten multiple choice questions covering chemical formulas. Topics include simplest and molecular formulas, mass percent and naming compounds.
2016-09-28T11:16:08ZA pure substance or chemical substance is a material that is homogeneous and has constant properties throughout the sample. Here are examples of pure substances.
2016-09-28T11:16:08ZAtoms are the smallest units of each element and the building blocks of matter. Here's how to make an atom model using common materials.
2016-09-28T11:16:08ZThere are seven elements that form homonuclear diatomic molecules or simple molecules with their own atoms. This is a list of the 7 diatomic elements.
2016-09-28T11:16:08ZA scientific experiment may be designed with a control group. Here's what a control group is and how it helps increase the validity of an experiment.
2016-09-28T11:16:08ZMixing bleach and vinegar is a bad idea because it produces toxic chlorine gas. Here's what you should know about mixing these chemicals.
2016-09-28T11:16:08ZThe gas constant or R is an important constant in the ideal gas law. This is the definition and value of the gas constant.
2016-09-28T11:16:08ZThese are examples of covalent bonds and covalent compounds and an explanation of the type of atoms expected to form this type of chemical bond.
2016-09-28T11:16:08ZThis is an alphabetical list of worked example chemistry problems. Printable worksheets with questions and answers are also provided.
2016-09-28T11:16:08ZIn the melting ice experiment, make a colorful ice sculpture while learning about freezing point depression and erosion.
2016-09-28T11:16:08ZThis is an explanation of the difference between accuracy and precision. Examples of accuracy and precision are also provided.
2016-09-28T11:16:08ZMass 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.
2016-09-28T11:16:08ZThe scientific method is a method for conducting an objective investigation. The scientific method involves making observations and conducting an experiment to test a hypothesis. Here are the steps of the scientific method.
2016-09-28T11:16:08ZYou know science is concerned with experiments and experimentation, but do you know what exactly an experiment is? Here's the answer to the question.
2016-09-28T11:16:08ZThis 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.
2016-09-28T11:16:08ZHave you ever wondered why atoms form chemical bonds with other atoms? Here's the scientific reason and an explanation of stability.
2016-09-28T11:16:08ZLearn about the parts of the periodic table and how to use the table organization to predict element properties.
2016-09-28T11:16:08ZDownload or print these PNG and PDF printable periodic tables to help work chemistry problems or to predict properties of the elements.
2016-09-28T11:16:08ZThe reaction between baking soda and vinegar is used in chemical volcanoes. Here is the equation for the reaction between baking soda and vinegar.
2016-09-28T11:16:08ZThe 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.
2016-09-28T11:16:08ZOne of the most common types of experiment is a controlled experiment. Here is a look at what a controlled experiment is and why this type of experiment is so popular.
2016-09-28T11:16:08ZLearn what significant figures are and how they are used with respect to scientific measurements and calculations.
2016-09-28T11:16:08ZIonic compounds form when elements share electrons. Here are examples of ionic bonds and ionic compounds.
2016-09-28T11:16:08ZWater is a polar molecule. Here is the explanation for why water is a polar molecule and why water is a polar solvent.
2016-09-28T11:16:08ZLearn about Lewis structures, also called electron dot structures and get step-by-step help drawing them.
2016-09-28T11:16:08ZHere is a look at what the molecular formula and empirical formula are and steps for finding the molecular formula and empirical formula.
2016-09-28T11:16:08ZLearn about the Bohr Model of the atom, which has an atom with a positively-charged nucleus orbited by negatively-charged electrons.
2016-09-28T11:16:08ZHere's how to calculate theoretical yield or how much product will be produced with given quantities of reactants.
2016-09-28T11:16:08ZIonic and covalent bonds hold molecules together. Learn to distinguish between ionic and covalent bonds, and determine whether a bond will be polar or nonpolar.
2016-09-28T11:16:08ZHere is a simple explanation of the difference between mass and weight, with examples and a chart comparing the two concepts.
2016-09-28T11:16:08ZThe chemical elements are the building blocks of all matter. Here are interesting and essential element facts you need to know.
2016-09-28T11:16:08ZThe 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.
2016-09-28T11:16:08ZLooking 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.
2016-09-28T11:16:08ZThe periodic table organizes the elements according to their periodic properties. Find 10 periodic table facts that are interesting and informative.
2016-09-28T11:16:08ZChemical elements are known by their names and by their symbols. Here is a list of 10 examples of elements and their symbols.
2016-09-28T11:16:08ZLearn whether or not it is safe to drink bleach, what happens if you do, and whether it can kill you. Also answering the rumor if drinking bleach can help you pass a drug test
2016-09-28T11:16:08ZAt what temperature does water boil? What determines the boiling point of water? Here's the answer to this common question.
2016-09-28T11:16:08ZThis is the definition of a dependent variable as the phrase is used in a scientific experiment. Get examples of dependent and independent variables.
2016-09-28T11:16:08ZThese 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.
2016-09-28T11:16:08ZHave 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.
2016-09-28T11:16:08ZSulfuric 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.
2016-09-28T11:16:08ZIs dissolving salt in water a chemical change or a physical change? Here's the process that occurs and an explanation of the answer.
2016-09-28T11:16:08ZScience fair and research projects apply the scientific method. Here's an explanation of the scientific method and how the scientific method is used.
2016-09-28T11:16:08ZHere is an explanation of the process of distillation, a common method used in chemistry to separate substances.
2016-09-28T11:16:08ZEverything that has mass and takes up space is matter, yet some things do not consist of matter. Here is a list of 10 examples of non-matter.
2016-09-28T11:16:08ZChemistry is a big part of your everyday life. You find chemistry in daily life in foods you eat, air you breathe, soap, your emotions and literally every object you can see or touch. Here's a look at some examples of everyday chemistry.
2016-09-28T11:16:08ZSometimes it's nice to have a paper version of the periodic table of the elements that you can refer to when working problems or doing experiments in the lab. This is a collection of periodic tables that you can print and use.
2016-09-28T11:16:08ZHere's an explanation of what stoichiometry is, the types of problems it covers, and why it is important to understand it.
2016-09-28T11:16:08ZRNA 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.
2016-09-28T11:16:08ZChemistry is a fascinating science, full of unusual trivia! Here are some fun and interesting chemistry facts for you.
2016-09-28T11:16:08ZThis is a collection of printable worksheets to practice balancing equations. The printable worksheets are provided in pdf format with separate answer keys.
2016-09-28T11:16:08ZThe density of water is its weight per unit volume, which depends on temperature. Density is about 1 gram per milliliter, but here are more precise values for you.
2016-09-28T11:16:08ZHere are the first 20 elements of the periodic table, their atomic numbers, and the element symbols.
2016-09-28T11:16:08ZAre 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.
2016-09-28T11:16:08ZWhat is the importance of chemistry? Why would you want to learn about chemistry? Chemistry is the study of matter and its interactions with other matter and energy. Here's a look at the importance of chemistry and why you should study it.
2016-09-28T11:16:08ZThe 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.