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3463 |
PeriodsAtomicNumber |
On the periodic table, atoms are arranged along periods by increasing atomic number. |
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3464 |
PhysicalChange |
A physical change does not create a new substance. |
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3514 |
PhysicalProperties |
Physical properties are properties of a substance that are not associated with a change of the substance into other substances. |
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3465 |
Products |
The product(s) of a chemical reaction are the atoms, ions, and molecules after the reaction. |
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3472 |
ProtonPositive |
A proton has a positive charge. |
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3466 |
RateAndConcentration |
The rates of some chemical reactions increase when the concentrations of the reacting substances increase. |
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3467 |
RateAndTemperature |
The rates of some chemical reactions increase when the temperature of the reaction increases. |
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3468 |
Reactants |
The reactant(s) of a chemical reaction are the atoms, ions, and molecules before the reaction. |
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3469 |
ReactionCollisions |
Some chemical reactions are initiated by collisions among atoms, ions, or molecules. |
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3476 |
ReactionRate |
The rate of a chemical reaction is the rate of change of the concentration of a product or the negative rate of change of the concentration of a reactant. |
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3511 |
SubstanceProperties |
Chemical substances can be described and distinguished by their properties. |
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