CHEM 105 EXAM 1 QUESTIONS AND
ANSWERS
Accuracy - Correct Answers -how close a measurement is to the true value
Precision - Correct Answers -how close a group of measurements are to each other
atomic number - Correct Answers -the number of protons in the nucleus of an atom
atomic mass - Correct Answers -
Mass number - Correct Answers -sum of protons and neutrons
ex: mass number
C-13 how many protons and neutrons - Correct Answers -6 protons and 7 neutrons
isotopes - Correct Answers -have different number of neutrons
ANSWERS
Accuracy - Correct Answers -how close a measurement is to the true value
Precision - Correct Answers -how close a group of measurements are to each other
atomic number - Correct Answers -the number of protons in the nucleus of an atom
atomic mass - Correct Answers -
Mass number - Correct Answers -sum of protons and neutrons
ex: mass number
C-13 how many protons and neutrons - Correct Answers -6 protons and 7 neutrons
isotopes - Correct Answers -have different number of neutrons