Learn about chemical reactions, elements, and the periodic table with these resources for students and teachers.
If you are not sure what the molecular formulae mean you can look up the symbols by viewing the list of chemical elements (listed in alphabetical order of chemical symbol). You can also read more about molecular formulae of organic molecules....
+ Electronegativity Series of elements + Molecular Weights of organic substances + Electrochemical Series of metal activity + Acid Strength Series + List of acids and acidic residues + Standard Electrode Potential + Widgets for easy memorisation of chemical elements from the Periodic Table ...
List of facts about Mixtures: Mixturesconsist of two or moredifferent elements and / or compounds- physically intermingled, so Mixturescan include: at least two different types of atoms,or at least two different types of molecules,or at least one type of atomandat least one type of molecule...
atomic mass numbers (protons+neutrons). The atomic weight ofheliumis 4.002602, the average that reflects the typical ratio of natural abundances of its isotopes. Atomic weight is measured inatomic mass units(amu), also called daltons.See belowfor alist of chemical elements and their atomic ...
Lesley Yellowlees, Professor of Inorganic Electrochemistry at the University of Edinburgh, first woman President of the Royal Society of Chemistry, and uber-accomplished chemist with a never-ending list of academic and scientific achievements, needs no introduction. What needs attention is the many thi...
on the basis of the nature of the element, the process of accepting electrons in an atom can either be exothermic or endothermic. in general, energy is released when an electron is added to an atom and the electron gain enthalpy for such elements is negative. the electron gain enthalpy of...
A list of elements ordered by their reactivity How can metals be placed in order of their reactivity? Add the metals to water or acid and see which ones react the most (by how much fizzing there is) What is the name for a reaction where oxygen is removed from a compound? Redu...
binary compound- Abinary compoundis one made upof two elements. binding energy-Binding energyis the energy that holds protons and neutrons togetherin the atomic nucleus. bond energy-Bond energyisthe amount of energyrequired to break one mole of chemical bonds. ...
Learn about chemical reactions, elements, and the periodic table with these resources for students and teachers.