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 ...

"These cluster collisions are the most energetic phenomena since the Big Bang." When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Observing a ...

In the strange and fascinating world of quantum mechanics, particles have long been sorted into just two types: fermions and bosons. These labels help explain how matter forms and how forces work.

In recent years, a curious hypothetical particle called the axion, invented to address challenging problems with the strong nuclear force, has emerged as a leading candidate to explain dark matter.