CHEM 103 Module 1 Exam - Requires Responds Lockdown
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100% Correct.
accuracy - -describes how close a measurement is to the actual value
-precision - -describes how closely repeated measurements agree with each other
-significant figures - -1. all nonzero numbers are significant
2. zeros that appear between nonzero digits are significant
3. leading zeros are NOT significant
4. trailing zeros are significant IF there is a decimal point, but NOT significant if there is not a
decimal
-adding/subtracting sig figs - -least number of decimal places
-multiplying/dividing sig figs - -least number of sig figs
-mega (M) - -10^6
-kilo (k) - -10^3
-centi (c) - -10^-2
-milli (m) - -10^-3
-micro (u) - -10^-6
-nano (n) - -10^-9
-Angstrom - -10^-10
-pico (p) - -10^-12
-density formula - -density=mass/volume
-measurement of density - -g/cm3 or g/mL
-extensive property - -a property that depends on the amount of matter in a sample, i.e. mass,
volume
Browser + Webcam | Questions and Answers | Update |
100% Correct.
accuracy - -describes how close a measurement is to the actual value
-precision - -describes how closely repeated measurements agree with each other
-significant figures - -1. all nonzero numbers are significant
2. zeros that appear between nonzero digits are significant
3. leading zeros are NOT significant
4. trailing zeros are significant IF there is a decimal point, but NOT significant if there is not a
decimal
-adding/subtracting sig figs - -least number of decimal places
-multiplying/dividing sig figs - -least number of sig figs
-mega (M) - -10^6
-kilo (k) - -10^3
-centi (c) - -10^-2
-milli (m) - -10^-3
-micro (u) - -10^-6
-nano (n) - -10^-9
-Angstrom - -10^-10
-pico (p) - -10^-12
-density formula - -density=mass/volume
-measurement of density - -g/cm3 or g/mL
-extensive property - -a property that depends on the amount of matter in a sample, i.e. mass,
volume
