You may have noticed that the rock formations are very different colors. The rock formations on the left are from Red Rock State Park in Texas, and on the right is El Capitan Mountain in Yosemite ...

Students will learn how to categorize matter as either pure substances or mixtures. Students will apply tests, based on physical properties of matter samples, to determine whether a mixture is ...

Learn more about the science of chemistry. Chemistry is the branch of science that deals with matter, the elements that make up everything in the universe and how they interact. Learn more about ...

THIS is a handbook on the Practical Chemistry of the Non-metallic Elements, designed to meet the requirements of pupils of Mechanics' Institutions, and of Science Classes of a similar kind. The true ...

The appearance of oxygen in Earth's atmosphere was a turning point in the history of our planet, forever transforming the ...

Scientists have determined Saturn's moon Enceladus has the necessary materials to make it habitable, according to a new study. "We previously found that Enceladus’ ocean is rich in a variety of ...