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Dethloff Period1
Science
| Question | Answer |
|---|---|
| Define Law of Conservation of Mass | states that in a chemical reaction, the mass of the products equals the mass of the reactants. |
| Define Physical Change | a change from one state (solid,liquid or gas) to another without a change in chemical composition. |
| Define Chemical Change | when a new substance is formed through a chemical reaction |
| Define Element | a substance that cannot be broken down by chemical means |
| Define Element (Diatomic) Molecule | molecules that are composed only of two atoms, of either the same or different chemical elements |
| Define Compound Molecule | is a molecule that contains at least two different elements. |
| Define Chemical Equation | is 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 |
| Define Chemical Reaction | A process that involves rearrangement of the molecular or ionic structure of a substance, as opposed to a change in physical form or a nuclear reaction |
| Define Reactants (in a chemical equation) | A substance that takes part in and undergoes change during a reaction |
| Define Products (in a chemical equation) | A product is a substance that is formed as the result of a chemical reaction. |
| Define Coefficient (in a chemical equation) | The number of molecules of reactants or products |
| Define Subscript (in a chemical equation) | subscripts indicate the ratio of elements |
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C0708369
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