Science
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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| Define Law of Conservation of Mass | states that in a chemical reaction, the mass of the products equals the mass of the reactants.
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| Define Physical Change | a change from one state (solid,liquid or gas) to another without a change in chemical composition.
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| Define Chemical Change | when a new substance is formed through a chemical reaction
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| Define Element | a substance that cannot be broken down by chemical means
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| Define Element (Diatomic) Molecule | molecules that are composed only of two atoms, of either the same or different chemical elements
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| Define Compound Molecule | is a molecule that contains at least two different elements.
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| 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
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| 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
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| Define Reactants (in a chemical equation) | A substance that takes part in and undergoes change during a reaction
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| Define Products (in a chemical equation) | A product is a substance that is formed as the result of a chemical reaction.
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| Define Coefficient (in a chemical equation) | The number of molecules of reactants or products
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| Define Subscript (in a chemical equation) | subscripts indicate the ratio of elements
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Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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