Monthly Archives: August 2018

Saline solution is made by dissolving sodium chloride into water. — Saline solution is a solution of salt (sodium chloride) in water. While it’s commercially available, saline solution is easy to make yourself, using nothing more complicated than salt and water. Use the Right Salt and Water If you’re making saline solution to soak sore muscles or as a mouth rinse, […]

How to Make Saline Solution

This entry was posted on August 17, 2018 by Anne Helmenstine (updated on May 2, 2026)

Dependent Variable Definition — Get the definition of the dependent variable in science along with examples of how to identify the dependent variable in an experiment.

Dependent Variable Definition and Examples

This entry was posted on August 17, 2018 by Anne Helmenstine (updated on January 2, 2023)

Independent Variable and Dependent Variable — Understand what the independent variable is in a scientific experiment, get examples, and learn how to plot the variable on a graph.

What Is an Independent Variable? Definition and Examples

This entry was posted on August 17, 2018 by Anne Helmenstine (updated on May 18, 2025)

Aqua Regia Definition — Get the definition of aqua regia in chemistry. Learn how to make aqua regia solution, use it safely, and dispose of it.

What Is Aqua Regia? Aqua Regia Definition and Preparation

This entry was posted on August 16, 2018 by Anne Helmenstine (updated on September 14, 2024)

Scientific Method Vocabulary — Use this handy glossary to look up the definitions of scientific method vocabulary terms, including variables and parts of an experiment.

Scientific Method Vocabulary Terms

This entry was posted on August 16, 2018 by Anne Helmenstine (updated on May 18, 2025)

Kona Sunset — Hawaiian sunsets are spectacular. They draw visitors to the islands from all over the world not just because of their stunning vibrant colors, but also because Hawaii is one of the best places to view the green flash. The vivid colors result from a perfect cocktail of conditions, regularly found […]

The Scientific Reason Why Hawaiian Sunsets Are So Beautiful Recently updated !

This entry was posted on August 13, 2018 by Anne Helmenstine (updated on August 22, 2026)

Color Periodic Table without Names - 118 Elements — Here is a 118 element periodic table without names of the elements included on the table. Color Periodic Table without Names The first table is a color version of the periodic table without the element names included. This table has the atomic numbers, element symbols, and atomic masses rounded to […]

Printable Periodic Table without Names

This entry was posted on August 3, 2018 by Todd Helmenstine (updated on May 2, 2021)