Monthly Archives: April 2014

In a liquid, the highest density liquid is at the bottom of the container.
Traditional density columns layer immiscible liquids (ones that won’t mix), such as oil and water. One advantage of this type of density column is that you can shake the container and the liquids will separate. One disadvantage to using immiscible liquids is that you quickly run out of either readily […]

Easy Rainbow Density Science Project

Ammonia 3
Electrolytes are chemicals that break into ions (ionize) when they are dissolved in water. The positively-charged ions are called cations, while the negatively charged ions are called anions. Substances can be categorized as strong electrolytes, weak electrolytes, or nonelectrolytes. Strong Electrolytes Strong electrolytes completely ionize in water. This means 100% […]

What Are Electrolytes in Chemistry? Strong, Weak, and Non Electrolytes

Rice Flex Battery
Chemists at Rice University have developed a material that can function as an ultra-thin and flexible rechargeable battery and contains no lithium. Lithium is a common element used in many rechargeable batteries today. Lithium ion batteries can hold a lot of charge in a small package and can be reused and recharged […]

Lithium Free Flexible Batteries

Everyone knows that stars are far away. They are far enough away the distances between them is measured in light years. A light year is the distance light travels in one year or 9.5 x 1012 kilometers or 5.9 x 1012 miles. The ten closest stars are all within 10 light years of our Sun. […]

10 Closest Stars