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Ms Cambell Scinece

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
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Term
Definition
Electron Dot Diagram   An easy way to show the valence electron in an atom or chemical bond  
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Compound   A set of elements that are chemically bonded and changed into new substances NaCl= salt  
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Ductility   metals that can be stretched and drawn into into wires  
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Malleability   metals can be pounded into thin sheets  
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Metallic bond   A special bond between metal ions and the electrons that swim around them  
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Conductivity   metal can conduct electricity and heat  
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Covalent bond   The type of bond that forms when atoms share electrons instead of tranferring them  
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Crystal lattice   Repeating 3 dimensial pattern that forms when ions bonds  
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Atom   smallest peice of matter that has the same properties of the element it is in  
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Proton   A positive, +, subatomic particle in the atoms nucleus. Is the identity of the element and a atomic number  
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Neutron   A neutral subatomic particle in the atoms nucleus. Has no charge and most of the mass  
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Electron   A negative subatomic particle spinning outside the nucleus of an atom. Tiny!  
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Element   The simplest forms of matter that contain only one type of atom  
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Periodic Table of Elements   A chart that organized all the elemensts by atomic number and properties  
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Valence Electrons   The electron in the outer most level of an atom that causes atoms to bond together  
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Chemical Bond   An interaction that holds 2 atoms together  
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Chemical Bonding   The joining of atoms to form new substances  
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Ionic Bond   IS formed when electrons are transferred from one atom to another  
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Ion   Charged particle of atom that gained or lost electrons  
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Chemical Formula   A shorthand way to use chemical symbols and numbers to represent a substance (H20)  
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Chemical Equation   Uses symbols to show the relationship between the reactants and the products C+02->CO2  
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Subscript   small number to the right of the element that shows how many atoms there are of this element  
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Coefficient   The large number that multiplies atoms of the element 2Cl+3Na  
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Molecule   2 or more atoms joined in a definite ratio keeps physical and chemical properties  
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Diatomic Molecule   A molecule made of 2 atoms of the same element (ex oxygen atoms.  
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Reactant   A substance or molecule that starts chemical reactions  
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Product   The substance that forms as a result of a chemical reaction  
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Law of Conversation of Mass   State that matter is neither created nor destroyed in a chemical reaction  
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Synthesis Reaction   When two or more substances combine to create one new compound  
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Decomposition Reaction   A reaction here a single compound breaks down to form 2 simpler substances  
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Single- Displacement Reaction   One element replaces another element in compound and 1 element  
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Double-Displacement Reaction   The 2 metal ions in compound switch places in a chemical reacton  
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Indicator   Will change colors in the presence of an acid or a base  
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