In chemistry, an element is a pure substance consisting only of atoms that all have the same numbers of protons in their nuclei. Unlike chemical compounds ...
11.12.2008 · A chemical element is a substance that cannot be further broken down by any chemical reaction. Each element has a unique number of protons in its atom. For example, a hydrogen atom has 1 proton, while a carbon atom has 6 protons. Varying the number of electrons in an atom of an element produces ions. Changing the number of neutrons produces ...
chemical element, also called element, any substance that cannot be decomposed into simpler substances by ordinary chemical processes. Elements are the ...
Element (chemistry) synonyms, Element (chemistry) pronunciation, Element (chemistry) translation, English dictionary definition of Element (chemistry). Noun 1. chemical element - any of the more than 100 known substances that cannot be separated into simpler substances and that singly or in combination ...
An element is a substance that cannot be broken down into any other substance. Every element is made up of its own type of atom. This is why the chemical ...
What is an Element? An element is a substance whose atoms all have the same number of protons: another way of saying this is that all of a particular element's ...
When atoms of the same element have different numbers of neutrons, they are called isotopes. How Elements Came to be Defined Correctly. In 1913, chemistry and physics were topsy-turvy. Some big hitters - including Dmitri Mendeleev - were talking seriously about elements lighter than hydrogen and elements between hydrogen and helium.
02.05.2021 · By this definition, O 2 would be an element, a molecule, and a compound. Because of differing definitions, chemistry teachers probably ought to stay away from questions about elements/compounds and simply focus on the 118 elements of the …