this is helpful
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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1.Law of conservation of mass | States that mass is neither created nor destroyed in any ordinary chemical reaction.
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2.physical change | A physical change does not produce a new substance.
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3.chemical change | A chemical change produces a new substance.
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4.Element | substance that cannot be broken down into simpler substances.
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5.chemical formula | type and quantity of atoms and molecules that are present.
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6.Element molecule | molecule of one type of atom.
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7.compound molecule | made of more than 1 type of atom.
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8.chemical equation | shorthand form for writing what reactants are used and what products are formed in a chemical reaction;sometimes shows whether energy is produced or absorbed.
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9.chemical reaction | process that produces chemical change , resulting in new substances that have properties different from those of the original substances.
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10.reactants(in a chemical equation) | substances that exists before a chemical reaction begins.
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11.products(in a chemical equation) | substances that forms as a result of a chemical reaction.
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12.coefficent(in a chemical equation) | The number of molecules of reactants or products.
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13.subscription(in a chemical equation) | tells the number of atoms in one molecule.
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14.Diatomic | having two atoms in the molecule.
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Created by:
Diego Rubio
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