The periodic table of elements is a chemistry reference that lists elements by increasing atomic number, which typically correlates to their atomic masses. The atomic number increases from left to right as well as from t... More » Science Chemistry

Some elements on the periodic table are oxygen, helium, arsenic and fluorine. Oxygen is an odorless, tasteless and colorless gas at room temperature, but is bright blue as a liquid. Oxygen is a very reactive element and ... More » Science Chemistry

The lightest element on the periodic table is hydrogen. The atomic weight of hydrogen is 1.00794 and the atomic number is 1. Hydrogen is the most abundant element on the periodic table with 75 percent of the mass of the ... More » Science Chemistry
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Dmitri Mendeleev's periodic table featured elements arranged in accordance with their atomic mass, while the modern table has elements arranged according to periodic number. Mendeleev's periodic table also had the elemen... More » Science Chemistry

To convert moles of a chemical substance to formula units, first convert moles into grams by using the molar masses of the elements that form the chemical compound. Every element in a chemical substance has its own molar... More » Science Chemistry

Antoine Lavoisier earns the nickname "Father of Modern Chemistry" for his profound contributions to the field of chemistry, including the creation of the theory of oxygen's chemical reactivity and joint authorship of the... More » Science Chemistry

The law of octaves in chemistry is a generalization of a correspondence between chemical properties and atomic weight, in which different elements with similar chemical properties are usually separated by some multiple o... More » Science Chemistry