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Madeline's Vocab
Question | Answer |
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Law of Conservation of Mars | a fundamental principle of classical physics that matter cannot be created or destroyed in an isolated system. |
Physical Change | a change from one state (solid or liquid or gas) to another without a change in chemical composition. |
Chemical Change | (chemistry) any process determined by the atomic and molecular composition and structure of the substances involved. |
Element | one of a class of substances that cannot be separated into simpler substances by chemical means. |
Chemical Formula | a representation of a substance using symbols for its constituent elements |
Element (diatomic) molecule | one that is composed of atoms of either... in a molecule. Nitrogen, Fluorine, Oxygen, Iodine are all diatomic |
Compound molecule | A molecule is an electrically neutral group of two or more atoms held together by covalent chemical bonds. |
Chemical Equation | the symbolic representation of a chemical reaction where the reactant entities are given on the left hand side and the product entities on the right hand side.The coefficients next to the symbols. |
Chemical Reaction | A chemical reaction is a process that leads to the transformation of one set of chemical substances to another. |
Reactions (chemical equations) | (starting materials)on the left side of the equation. |
Products (chemical equations) | (resulting substance)on the right side of the equation. |
Coefficient (in a chemical equation) | The coefficients next to the symbols and formulae of entities are the absolute values of the stoichiometric numbers |
Subscript (in a chemical equation) | The subscripts tell you how many atoms of each element are in the equation. |