The periodic table of elements is a landmark categorization ... pure substances made from a single type of atom. But how many ...

If an atom has 2 protons, that’s an atom of the element helium. If it has 7 protons, that’s nitrogen. But the logic of the periodic table also relies upon the number and organisation of electr ...

That’s why this periodic table clock really caught our eye. [gocivici]’s idea is a simple one: light up three different elements with three different colors for hours, minutes, and seconds ...

Lesson Plans: The Periodic Table and Bonding Download inquiry-based lesson plans and activity sheets to introduce the structure of the atom, the periodic table, energy levels, and bonding to students.

This exercise uses molecular models to calculate atom economy for a saponification reaction. As part of the ChemClub's 10 th Anniversary, we asked clubs to create elements of the periodic table ...

"The discovery provides new understanding of how berkelium and other actinides behave relative to their peers in the periodic table." By pinning down the berkelium atom, the team could test its ...

Electronegativity, an essential characteristic of all elements in the periodic table, measures an atom's ability to attract electrons towards itself within a chemical bond. This vital theoretical ...

1. Convert kilograms/second to grams per second. 1 kg = 1000 grams. If the mass flowrate is 0.25 kilograms/second, convert this to 250 grams/second. 2. Convert grams to moles, using the molar mass of ...

More than 75 years after its initial discovery, scientists have created an organometallic molecule containing the transuranium element berkelium. According to a new study, the electronic signature of ...

The modern periodic table is based closely on the ideas he used ... For example, one oxygen atom combines with two hydrogen atoms to make water (H₂O). A Russian scientist called Dmitri Mendeleev ...

The modern periodic table is based closely on the ideas he used ... For example, one oxygen atom combines with two hydrogen atoms to make water (H₂O). A Russian scientist called Dmitri Mendeleev ...