Chem 103- Module 1 Exam Questions & Answers latest Updates (100/100)

accuracy - ANSWER-describes how close a measurement is to the actual value precision - ANSWER-describes how closely repeated measurements agree with each other significant figures - ANSWER-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 - ANSWER-least number of decimal places multiplying/dividing sig figs - ANSWER-least number of sig figs mega (M) - ANSWER-10^6 kilo (k) - ANSWER-10^3 centi (c) - ANSWER-10^-2 milli (m) - ANSWER-10^-3 micro (u) - ANSWER-10^-6 nano (n) - ANSWER-10^-9 Angstrom - ANSWER-10^-10 pico (p) - ANSWER-10^-12 density formula - ANSWER-density=mass/volume measurement of density - ANSWER-g/cm3 or g/mL extensive property - ANSWER-a property that depends on the amount of matter in a sample, i.e. mass, volume intensive property - ANSWER-a property that depends on the type of matter in a sample, not the amount of matter, i.e. density