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Utah Chem 1210 Questions And Answers 2024 Update
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Utah Chem 1210 Questions And Answers 2024 Update
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Chem 1210 Exam 1 Study GuideQuestions And Answers 2024 Update
Scientific Notation ANS✔✔ A number in scientific notation contains a coefficient between 1 and 10 and
a power of 10 and a unit.
Ex 150m=1.5 x 100= 1.5 (coefficient) x 10^2m (power of ten,unit)
Kilo ANS✔✔ 1000 or 10^3
Centi ANS✔✔ 0.01 or 10^-2
Milli ANS✔✔ 0.001 or 10^-3
Micro ANS✔✔ 0.000001 or 10^-6
Nano ANS✔✔ 0.000000001 or 10^-9
Exact numbers ANS✔✔ have defined values and are # obtained by counting.
Inexact numbers ANS✔✔ are numbers obtained by any method other than counting.
Significant figures ANS✔✔ are the meaningful digits in a reported number.
, An uncertain digit ANS✔✔ is the last digit in a measured number.
Any nonzero digit is significant ANS✔✔ 1129 m = 4 significant figures.
Zeros between nonzero digits are significant ANS✔✔ 109 cm 3 significant figures
Zeros to the LEFT of the first nonzero digit are not significant ANS✔✔ 0.0003 kg 1 significant figure
Zeros to the RIGHT of the last nonzero digit are significant if a decimal is present. ANS✔✔ 9.550 m = 4
significant figures
In multiplication and division the number of significant figures... ANS✔✔ in the final product or quotient
is determined by the original number that has the smallest number of significant figures.
Accuracy ANS✔✔ tells us how close a measurement is to the TRUE value
Precision ANS✔✔ tells us how closely multiple measurements of the same thing are to one another.
The equation to find Density... ANS✔✔ d=m/v
(mass over volume)
An Extensive property of matter... ANS✔✔ Depends on the amount of matter
An Intensive property of matter... ANS✔✔ Does not depend on the amount of matter
Substance ANS✔✔ is a form of matter that has definite composition and distinct properties.
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