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Chemcial reactions
physical science,
Term | Definition |
---|---|
chemical equations | a representation of a chemical reaction that uses symbols to show the relationship between the reactants and the products. |
reactant | a chemical substance that is present at the start of a chemical reaction. |
product | a chemical substance formed as a result of a chemical reaction. |
coefficient | a number in front of a chemical formula in an equation that indicates how many molecules of each reactant and product are involved in a reaction. |
subscript | a number in a chemical formula that tells the number of atoms in a molecule or ratio of elements in a compound. |
Conservation of Mass | the principle stating that matter is not created or destroyed during a chemical reaction. |
chemical bond | the force of attraction that holds two atoms together as a result of the rearrangement of electrons between them. |
Electron Dot Diagram | the symbol of an element surrounded by dots that represent valence electrons. |
Valence Electrons | the electrons that have the highest energy level and are held loosely. |
Ionic Bond | Metal to Nonmetal bond of opposites. |
Covalent Bond | Nonmetal to Nonmetal bond of sharing electrons. |
alloy | a mixture of two or more elements that has the properties of metal. |