https://padlet.com/304971/8t8tjdn23vxw Made with a taste for adventure en-us 2017-11-27 17:45:35 UTC 2024-07-28 09:25:29 UTC hello@padlet.com 304971 https://padlet.com/304971/8t8tjdn23vxw/wish/210547506 the basic unit of a chemical element.]]> 2017-11-27 17:46:25 UTC https://padlet.com/304971/8t8tjdn23vxw/wish/210547506 304971 https://padlet.com/304971/8t8tjdn23vxw/wish/210547622 An electron is a negatively charged subatomic particle. It can be either free (not attached to any atom), or bound to the nucleus of an atom. Electrons in atoms exist in spherical shells of various radii, representing energy levels. ... The charge on a single electron is considered as the unit electrical charge.]]> 2017-11-27 17:46:36 UTC https://padlet.com/304971/8t8tjdn23vxw/wish/210547622 304971 https://padlet.com/304971/8t8tjdn23vxw/wish/210547740  A proton is a subatomic particle with a positive electric charge. Protons are found in the nucleus of every atom. In fact, the number of protons in each atom is it's atomic number.]]> 2017-11-27 17:46:47 UTC https://padlet.com/304971/8t8tjdn23vxw/wish/210547740 304971 https://padlet.com/304971/8t8tjdn23vxw/wish/210547834  An elementary atomic particle that has no charge and a mass that is approximately the same as that of a proton. Neutrons are found in all atoms except the lightest isotopes of hydrogen.]]> 2017-11-27 17:46:59 UTC https://padlet.com/304971/8t8tjdn23vxw/wish/210547834 304971 https://padlet.com/304971/8t8tjdn23vxw/wish/210547990 The electron cloud is ​the region of negative charge surrounding an atomic nucleus that is associated with an atomic orbital. The region is defined mathematically, describing a region with a high probability of containing electrons.]]> 2017-11-27 17:47:12 UTC https://padlet.com/304971/8t8tjdn23vxw/wish/210547990 304971 https://padlet.com/304971/8t8tjdn23vxw/wish/210548169 A scientific theory of the nature of matter, which states that matter is composed of discrete units called atoms. ... The word atom comes from the Ancient Greek adjective atomos, meaning "indivisible".]]> 2017-11-27 17:47:28 UTC https://padlet.com/304971/8t8tjdn23vxw/wish/210548169 304971 https://padlet.com/304971/8t8tjdn23vxw/wish/210548390 One of the stable states of constant energy that may be assumed by a physical system —used especially of the quantum states of electrons in atoms and of nuclei — called also energy state.]]> 2017-11-27 17:47:52 UTC https://padlet.com/304971/8t8tjdn23vxw/wish/210548390 304971 https://padlet.com/304971/8t8tjdn23vxw/wish/210548465 Each of the actual or potential patterns of electron density that may be formed in an atom or molecule by one or more electrons, and that can be represented as a wave function.]]> 2017-11-27 17:48:00 UTC https://padlet.com/304971/8t8tjdn23vxw/wish/210548465 304971 https://padlet.com/304971/8t8tjdn23vxw/wish/210548558 The electron affinity of an atom or molecule is defined as the amount of energy released or spent when an electron is added to a neutral atom or molecule in the gaseous state to form a negative ion.]]> 2017-11-27 17:48:10 UTC https://padlet.com/304971/8t8tjdn23vxw/wish/210548558 304971 https://padlet.com/304971/8t8tjdn23vxw/wish/210548913 The Periodic Table is a way of listing the elements. Elements are listed in the table by the structure of their atoms. ... From left to right and top to bottom, the elements are listed in the order of their atomic number, which is the number of protons in each atom.]]> 2017-11-27 17:48:45 UTC https://padlet.com/304971/8t8tjdn23vxw/wish/210548913 304971 https://padlet.com/304971/8t8tjdn23vxw/wish/210548916 A substance that cannot be decomposed into simpler substances by chemical means, and is made up of atoms all with identical number of protons.]]> 2017-11-27 17:48:45 UTC https://padlet.com/304971/8t8tjdn23vxw/wish/210548916 304971 https://padlet.com/304971/8t8tjdn23vxw/wish/210549004  A material made up of two or more parts or elements. (chemistry) A substance consisting of atoms or ions of two or more elements that are chemically bonded together, e.g. carbon dioxide, a substance consisting of carbon and two oxygen atoms.]]> 2017-11-27 17:48:53 UTC https://padlet.com/304971/8t8tjdn23vxw/wish/210549004 304971 https://padlet.com/304971/8t8tjdn23vxw/wish/210549071 An extremely small particle or substance, especially at cellular or structural level, as a biomolecule. (physics and chemistry) The smallest unit of an element or compound, made up of two or more atoms held together by strong chemical bond.]]> 2017-11-27 17:49:01 UTC https://padlet.com/304971/8t8tjdn23vxw/wish/210549071 304971 https://padlet.com/304971/8t8tjdn23vxw/wish/210549181  An element that readily forms positive ions (cations) and has metallic bonds. Metals are sometimes described as a lattice of positive ions surrounded by a cloud of delocalized electrons.]]> 2017-11-27 17:49:12 UTC https://padlet.com/304971/8t8tjdn23vxw/wish/210549181 304971 https://padlet.com/304971/8t8tjdn23vxw/wish/210549230 An element or substance that is not a metal.]]> 2017-11-27 17:49:17 UTC https://padlet.com/304971/8t8tjdn23vxw/wish/210549230