An atom consists of a heavy center, called the nucleus, made of particles called protons and neutrons. An atom has lighter ...

The image you project contains all of the electrons for elements 1–20. However, the periodic table on the activity sheet contains electrons only for the elements at the beginning and end of each ...

Many heavy atoms form from a supernova explosion, the remnants of which are shown in this image. NASA/ESA/Hubble Heritage ...

The precursors of heavy elements might arise in the plasma underbellies of swollen stars or in smoldering stellar corpses.

This was a surprise as the half-life for that particular xenon was a half-life of 18 billion trillion years. That’s more than ...

The atoms in the periodic table are arranged to show characteristics and relationships between atoms and groups of atoms. Summary. Students will begin to look closely at the periodic table. They will ...

The race to build the first useful quantum computer is on and may revolutionize the world with brand new capabilities, from ...

Students often confuse the terms atoms, molecules, elements, and compounds. Here, we will elaborate on atoms and molecules to bring better clarity to students and make the concept more understandable.

AFTER much use in political debate, words tend to become leathery and pliable in the meanings they suggest. Perhaps they gain something in richness of implication but they lose in precision. For ...

In a study published in Physical Review Letters, scientists at GSI Helmholtzzentrum für Schwerionenforschung have discovered ...

Clouds play an important role in regulating the climate. Bright ones at low altitudes generally reflect solar energy away, ...

Colors, sparks, booms and whistles all require different pyrotechnic recipes. chensiyuan/WikimediaCommons, CC BY-SA Paul E.