Everything we can see and touch, and quite a lot that we can’t as well, is made of tiny particles called atoms. Some substances, like particles of this iron, contain only one kind of atom.

There are over 100 different types of atoms, and materials can be classified into elements, compounds, and mixtures based on their atomic composition. The film also discusses how new materials are ...

Students will learn how to categorize matter as either pure substances or mixtures ... exist as one Fe atom for every two S atoms. Pure substances, which are one type of matter, can either be elements ...

Substances such as pure chemical elements and elemental molecules consisting of multiple atoms of a single element (such as H2, S8, etc.) are not considered chemical compounds. Elements form ...

The idea is that Linus collects a large number of the type of atom (the element) he needs and uses a molecular replicator, that doesn’t exist yet, to create a large quantity of the molecule (the ...