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Atoms & elements

Atoms & elements - Term Definition Nucleus 1 the...

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Term: Nucleus Definition: 1) the organelle that controls a cells activities 2) the center of an atom Term: Proton Definition: A subatomic particle with a positive charge Term: Neutron Definition: A subatomic particle with no charge Term: Electron Definition: A subatomic particle with a negative charge Term: Atom Definition: The smallest unit of an element that has all the properties of that element
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Term: Molecule Definition: A grouping of 2 or more atoms joined together Term: Periodic table Definition: The table of elements in order of increasing atomic number, grouping by similar properties Term: Compound Definition: A substance made of all the atoms of 2 or more different elements Term: Element Definition: A substance made up of 1 kind of atom Term: 3 types of elements Definition: 1) metals 2) nonmetals 3) metalloids
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Term: Atomic number Definition: Number of protons Term: Democracis Definition: First person to think of us made of atoms (Aristotle second) Term: Mercury Definition: Only liquid metal @ room temperature Term: Heat & electricity
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