The “lead” of a pencil is actually made of a substance called graphite which is made of carbon atoms. The picture shows a close-up of one carbon atom. A hydrogen atom has one proton as the nucleus and ...

This includes understanding atoms as the building blocks of matter, as well as the arrangement of protons, neutrons, and electrons. HS-PS-1: Use the periodic table as a model to predict the relative ...

A chemical element is one of those squares on the periodic table that adorns many ... are made of protons, neutrons and electrons. It is the number of protons, otherwise known as the atomic ...

Atoms are in fact made up of three smaller particles called protons, electrons and neutrons ... find that the number is greater than the population of the world. Oxygen and carbon are both elements.

Players read questions about energy levels and score points by picking the correct element ... two electrons on the first energy level and six electrons on the second energy level. Since this atom has ...