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17 Cards in this Set
- Front
- Back
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Element |
Pure substances containing only 1 type of atom ex. Gold, iron C60 |
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Compound |
Pure substances made up of different types of atoms that are bonded together ex. Steel,NaCl, water |
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Mixture |
2 or more different substances that are physically mixed together -solutions |
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Homogeneous |
2 or more substances that are evenly mixed ex. salt water |
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Heterogeneous |
2 or more substances that are unevenly mixed ex. Sand and water, chicken noodle soup |
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Accuracy |
The agreement between experimental value and the accepted value |
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Precision |
The reproducibility of measurement and results |
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Solution |
Stable homogeneous mixture of two or more substances Ex. Air |
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Solvent |
The substance that dissolves the solute |
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Solute |
The substance that gets dissolved |
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Saturated solution |
Contains the max amount of solute at the specified temp |
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Unsaturated solute |
Contains less than the max amount of solute at a specific temp |
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Supersaturated |
Contains more than the max amount of solute at a specific temp |
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Rules of zeros in measurements |
·Zeros between significant digits count ex 302= 3SF ·Zeros at the beginning of a number dont count ex 0.0372=3SF ·Zeros at the end of a number before a decimal don't count ex. 103,200 = 4SF |
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Formula for density |
D= M/V |
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Rate of change for density graph formula |
y2-y1 / x2-x1 |
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Percent error formula |
(= absolute value) (Actual-experimental / actual) x 100 If less than 5% is good |
