https://padlet.com/303968/hpnemhsk9aho Made with swagger en-us 2017-11-27 16:49:37 UTC 2017-11-28 16:42:27 UTC hello@padlet.com 303968 https://padlet.com/303968/hpnemhsk9aho/wish/210514426 a stable subatomic particle occurring in all atomic nuclei, with a positive electric charge equal in magnitude to that of an electron, but of opposite sign.]]> 2017-11-27 16:52:37 UTC https://padlet.com/303968/hpnemhsk9aho/wish/210514426 303968 https://padlet.com/303968/hpnemhsk9aho/wish/210514473 a stable subatomic particle with a charge of negative electricity, found in all atoms and acting as the primary carrier of electricity in solids.]]> 2017-11-27 16:52:43 UTC https://padlet.com/303968/hpnemhsk9aho/wish/210514473 303968 https://padlet.com/303968/hpnemhsk9aho/wish/210514666 An atom is the smallest constituent unit of ordinary matter that has the properties of a chemical element. Every solid, liquid, gas, and plasma is composed of neutral or ionized atoms. Atoms are very small; typical sizes are around 100 picometers.]]> 2017-11-27 16:52:59 UTC https://padlet.com/303968/hpnemhsk9aho/wish/210514666 303968 https://padlet.com/303968/hpnemhsk9aho/wish/210995663 The neutron is a subatomic particle, symbol n or n0 , with no net electric charge and a mass slightly larger than that of a proton. Protons and neutrons constitute the nuclei of atoms.]]> 2017-11-28 16:26:12 UTC https://padlet.com/303968/hpnemhsk9aho/wish/210995663 303968 https://padlet.com/303968/hpnemhsk9aho/wish/210998399 Electron Cloud Model is an informal term in physics. It is used to describe where electrons are when they go around the nucleus of an atom. The electron cloud model is different from the older Bohr atomic model by Niels Bohr. Bohr talked about electrons orbiting the nucleus.]]> 2017-11-28 16:29:31 UTC https://padlet.com/303968/hpnemhsk9aho/wish/210998399 303968 https://padlet.com/303968/hpnemhsk9aho/wish/210998477 2017-11-28 16:29:37 UTC https://padlet.com/303968/hpnemhsk9aho/wish/210998477 303968 https://padlet.com/303968/hpnemhsk9aho/wish/211000244 the theory that all matter is made up of tiny indivisible particles (atoms). According to the modern version, the atoms of each element are effectively identical, but differ from those of other elements, and unite to form compounds in fixed proportions.]]> 2017-11-28 16:31:30 UTC https://padlet.com/303968/hpnemhsk9aho/wish/211000244 303968 https://padlet.com/303968/hpnemhsk9aho/wish/211001949 Energy levels inside an atom are the specific energies that electrons can have when occupying specific orbitals. Electrons can be excited to higher energy levels by absorbing energy from the surroundings. Light is emitted when an electron relaxes from a high energy state to a lower one.]]> 2017-11-28 16:33:34 UTC https://padlet.com/303968/hpnemhsk9aho/wish/211001949 303968 https://padlet.com/303968/hpnemhsk9aho/wish/211003112 In quantum mechanics, an atomic orbital is a mathematical function that describes the wave-like behavior of either one electron or a pair of electrons in an atom.]]> 2017-11-28 16:35:08 UTC https://padlet.com/303968/hpnemhsk9aho/wish/211003112 303968 https://padlet.com/303968/hpnemhsk9aho/wish/211003654 In chemistry and atomic physics, 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.]]> 2017-11-28 16:35:52 UTC https://padlet.com/303968/hpnemhsk9aho/wish/211003654 303968 https://padlet.com/303968/hpnemhsk9aho/wish/211004669 The periodic table is a tabular arrangement of the chemical elements, ordered by their atomic number, electron configurations, and recurring chemical properties. ]]> 2017-11-28 16:37:13 UTC https://padlet.com/303968/hpnemhsk9aho/wish/211004669 303968 https://padlet.com/303968/hpnemhsk9aho/wish/211005256 A chemical element is a species of atoms having the same number of protons in their atomic nuclei. 118 elements are identified, of which the first 94 occur naturally on Earth with the remaining 24 being synthetic elements.]]> 2017-11-28 16:38:01 UTC https://padlet.com/303968/hpnemhsk9aho/wish/211005256 303968 https://padlet.com/303968/hpnemhsk9aho/wish/211006035 a thing that is composed of two or more separate elements; a mixture]]> 2017-11-28 16:39:06 UTC https://padlet.com/303968/hpnemhsk9aho/wish/211006035 303968 https://padlet.com/303968/hpnemhsk9aho/wish/211007035 A molecule is an electrically neutral group of two or more atoms held together by chemical bonds. Molecules are distinguished from ions by their lack of electrical charge. ]]> 2017-11-28 16:40:32 UTC https://padlet.com/303968/hpnemhsk9aho/wish/211007035 303968 https://padlet.com/303968/hpnemhsk9aho/wish/211007707 The non-metals or non-metallic elements; hydrogen (H), carbon (C), nitrogen (N), oxygen (O), phosphorus (P), sulphur (sulfer) (S), selenium (Se), (Uuo may belong here) and the noble gases form a relatively small group with a step like pattern towards the left-hand side of the periodic table (hydrogen being the odd one ]]> 2017-11-28 16:41:24 UTC https://padlet.com/303968/hpnemhsk9aho/wish/211007707 303968 https://padlet.com/303968/hpnemhsk9aho/wish/211008117 The non-metals or non-metallic elements; hydrogen (H), carbon (C), nitrogen (N), oxygen (O), phosphorus (P), sulphur (sulfer) (S), selenium (Se), (Uuo may belong here) and the noble gases form a relatively small group with a step like pattern towards the left-hand side of the periodic table (hydrogen being the odd one v]]> 2017-11-28 16:41:57 UTC https://padlet.com/303968/hpnemhsk9aho/wish/211008117