Monthly Archives: February 2015

Add a bit of chemistry to your holidays with these holiday periodic table wallpapers. Each color periodic table contains a different holiday icon to represent the different element groups. All tables contain the element’s atomic number, symbol, name, and atomic mass. Click the image to view the full-sized, 1920×1080 wallpaper. […]

Holiday Periodic Table Wallpapers

Ruby Gemstone
Mass percent or mass percent composition is a measurement of concentration. It is a measure of the ratio of the mass of one part of a molecule to the mass of the total molecule and expressed as a percentage. This example problem shows how to determine the mass percent composition of […]

Mass Percent Example Problem

Molality is a measure of the concentration of a solute in a solution. It is used primarily when temperature is a concern. Molarity depends on the volume, but volume can change when temperature changes. Molality is based on the mass of solvent used to create the solution because mass does […]

Calculating Molality Example Problem

Molarity is a measure of the concentration of a solute in a solution. This molarity example problem shows the steps needed to calculate the molarity of a solution given the amount of solute and the desired volume of solution. Problem Calculate the molarity of a solution created by pouring 7.62 grams of MgCl2 […]

Calculating Molarity Example Problem

Beaker and Flask
Chemistry is a science which deals a lot with solutions and mixtures. Knowing just how much of one thing is mixed in with a solution is an important thing to know. Chemists measure this by determining the concentration of the solution or mixture. There are three terms that need to […]

Concentration Units For Solutions

Printable Protractor 360
Have you ever needed a protractor but couldn’t find one? Here’s a pair of printable protractors available whenever you want one. These printable protractors are transparent images, which makes it easy to print on transparencies. This allows you to look through the protractor while you use it. Click the image to […]

Printable Protractors

Periodic Table Oxidation States Wallpaper - 2015 4
This color periodic table chart with charges is an updated version of the Downloadable Periodic Table – Oxidation States. Each element cell contains the atomic number, symbol, name, atomic mass and most common valence charge of each element. The most common oxidation states are in bold text and predicted or unconfirmed states […]

Color Periodic Table Chart with Charges – 2015