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18 Cards in this Set
- Front
- Back
Avogadro's Number |
6.02×1023 |
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Standard notation |
Expressing numbers the usual way, with decimals |
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Exponential notation |
Expressing large/small numbers as the product of a number and a power of ten |
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Scientific notation |
Expressing large/small numbers as the product of a number (between 1 and 10) and a power of ten |
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Accurate measurement |
When an undamaged instrument is used correctly |
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Uncertainty in a measurement |
The last digit is uncertain or estimated |
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Significant digits (Sig Figs) |
The number of digits in a measurement: all the certain digits plus just one uncertain digit |
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Significant digits and zeros |
Zeros used to locate the decimal are not significant |
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Degree of precision |
Expressed either 1) as the number of sig. fig.s, or 2) the 'place' of the uncertain digit in a measurement eg. hundredths of a cm |
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Infinite significant figures |
Numbers with no uncertainty eg. 1 dozen=12 |
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Rounding rule for +/- measurements |
Sum vertically, keep 1 uncertain digit only |
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Scale on a graph |
Counting by 2s, 5s, 10s, etc. |
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Units on a graph |
Written after the quantity of measure eg. Temperature (°C) |
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Title on a graph |
Describes concisely; often x versus y quantities |
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Slope of a graph |
Rise over run |
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Best fit line |
Equal number of data points on either side of the line |
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Best fit curve |
Smooth curve through most of the data points |
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Rounding rule of ×/÷ measurements |
Answer is the same number of sig figs as the least precise measurement used in the calculation |