Substances can exist in three states of matter - solid, liquid and gas. All substances are made from particles, and the forces between the particles are different in solids, liquids and gases. The ...

Chemically, substances are classified into three types, solids, liquids and gases, but if it is said to classify a swinging fire as one of these three, you should be troubled by the answer. What on ...

Note: This video is designed to help the teacher better understand the lesson and is NOT intended to be shown to students. It includes observations and conclusions that students are meant to make on ...

A gas is a state of matter that does not have a definite shape and volume. It confirms the shape of a container in which it is held and even in the presence of gravity, it acquires a uniform density ...

Researchers report that the way a tissue's cells are arranged can serve as a fingerprint for the tissue's 'phase' -- whether it is more like a solid, liquid, or gas. For example, tumors that are more ...

Nigel Pereira on two inventions that seem to be mind-boggling as they seem to change the natural state of the resource in question. With deforestation and the burning of fossil fuels now widely ...