Astronomers from the University of Turku in Finland and elsewhere have performed a broadband spectral and timing study of an ...

Many industries depend on high-sensitivity analyses to ensure product performance and to protect consumer health and safety.

It's difficult to overstate just how surprisingly early to the party this water may have been. “This suggests that water, the ...

The periodic table of elements—also known as Mendeleev’s table—was developed in 1869 by Russian chemist Dmitri Mendeleev. It organizes all known chemical elements by their atomic number ...

Which brings us to John Newlands’ table of elements. By 1864, chemists had figured out how to measure the atomic masses of ...

As mass is equivalent to energy according to Einstein, these mass measurements gave hints about the extra binding energy the shell effect provides. Atomic nuclei around neutron number 152 are an ideal ...

Summary Students will begin to look closely at the periodic table. They will be introduced to the basic information given for the elements in most periodic tables: the name, symbol, atomic number, and ...

Key Concepts A submerged object displaces a volume of liquid equal to the volume of the object. One milliliter (1 mL) of water has a volume of 1 cubic centimeter (1 cm 3). Different atoms have ...

Students are generally advised to memorise the first 30 elements from the periodic table. And thus, expected to be aware of the atomic number and the atomic mass of those 30 elements.

In 1862, French geologist A.E.B. de Chancourtois arranged elements by increasing atomic weights and created a cylindrical table to show periodic property recurrence, but it gained little attention.