science vocab
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Law of Conservation of Mass | it states that matter cant be created or disappear.
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| Physical Change | a change is a substance that only affects the physical state.
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| Chemical Change | a change that changes the substance and can not be reversed. the whole substance has changed.
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| Element | a pure substance consisting of one type of atom
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| Chemical Formula | a way of expressing information about the atoms that constitute a particular chemical compound
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| Element (Diatomic) Molecule | molecules composed only of two atoms, of either the same or different chemical elements.
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| Compound Molecule | an electrically neutral group of two or more atoms held together by covalent chemical bonds.
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| Chemical Equation | 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
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| Chemical Reaction | a process that leads to the transformation of one set of chemical substances to another.
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| Reactants (in a chemical equation) | the equation the reactants (starting materials) and products (resulting substance), the formulas of the participants,
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| Products (in a chemical equation) | The equation identifies the reactants (starting materials) and products
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| Coefficient (in a chemical equation) | The number of molecules of reactants or products. For instance:
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| Subscript (in a chemical equation) | The subscripts tell you how many atoms of each element are in the equation
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| Diatomic |
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