CHEM 120 TEST 1 | 202 QUESTIONS AND
ANSWERS WITH COMPLETE SOLUTIONS 2025
UPDATE
What are the steps of the scientific method? - ANSWER formulation of a
hypothesis, development of a hypothesis, prediction, testing prediction, analysis
of experiment
What kind of data contains no numerical information? - ANSWER qualitative
What kind of data contains numbers and a scale (unit)? - ANSWER quantitative
Qualitative or quantitative?
Extracts from Pacific-yew bark kill cancer cells. - ANSWER qualitative
Qualitative or quantitative?
Compound "13a" is twenty times more effective than paclitaxel in killing ovarian
cancer cells. - ANSWER quantitative
SI unit for mass - ANSWER grams (g)
SI unit for length - ANSWER meters (m)
SI unit for volume - ANSWER liters (L)
,SI unit for energy - ANSWER joule (J)
SI unit for temperature - ANSWER Kelvin (K) or Celsius (degrees C)
SI unit for amount of something - ANSWER mole (mol)
SI unit for time - ANSWER seconds (s)
factor for mega (M) - ANSWER 10^6
factor for kilo (k) - ANSWER 10^3
factor for deci (d) - ANSWER 10^-1
factor for centi (c) - ANSWER 10^-2
factor for milli (m) - ANSWER 10^-3
factor for micro - ANSWER 10^-6
factor for nano (n) - ANSWER 10^-9
factor for pico (p) - ANSWER 10^-12
, factor for femto (f) - ANSWER 10^-15
Leading zeros are zeros that precede all the nonzero digits. These ________ count
as significant figures. (do/do not) - ANSWER do not
Captive zeros are zeros between nonzero digits. These _______ count as
significant figures. (do/do not) - ANSWER do
Trailing zeros are zeros at the right end of the numbers. They ______ count as
significant figures if the number DOES NOT contain a decimal point. They
________ count as significant figures if the number DOES contain a decimal point.
(do/do not) - ANSWER do not, do
How many significant figures are in 0.048? - ANSWER 2
How many significant figures are in 16.07? - ANSWER 4
How many significant figures are in 9.300? - ANSWER 4
How many significant figures are in 150? - ANSWER 2
How many significant figures are in 2.12? - ANSWER 3
How many significant figures are in 4.500? - ANSWER 4
ANSWERS WITH COMPLETE SOLUTIONS 2025
UPDATE
What are the steps of the scientific method? - ANSWER formulation of a
hypothesis, development of a hypothesis, prediction, testing prediction, analysis
of experiment
What kind of data contains no numerical information? - ANSWER qualitative
What kind of data contains numbers and a scale (unit)? - ANSWER quantitative
Qualitative or quantitative?
Extracts from Pacific-yew bark kill cancer cells. - ANSWER qualitative
Qualitative or quantitative?
Compound "13a" is twenty times more effective than paclitaxel in killing ovarian
cancer cells. - ANSWER quantitative
SI unit for mass - ANSWER grams (g)
SI unit for length - ANSWER meters (m)
SI unit for volume - ANSWER liters (L)
,SI unit for energy - ANSWER joule (J)
SI unit for temperature - ANSWER Kelvin (K) or Celsius (degrees C)
SI unit for amount of something - ANSWER mole (mol)
SI unit for time - ANSWER seconds (s)
factor for mega (M) - ANSWER 10^6
factor for kilo (k) - ANSWER 10^3
factor for deci (d) - ANSWER 10^-1
factor for centi (c) - ANSWER 10^-2
factor for milli (m) - ANSWER 10^-3
factor for micro - ANSWER 10^-6
factor for nano (n) - ANSWER 10^-9
factor for pico (p) - ANSWER 10^-12
, factor for femto (f) - ANSWER 10^-15
Leading zeros are zeros that precede all the nonzero digits. These ________ count
as significant figures. (do/do not) - ANSWER do not
Captive zeros are zeros between nonzero digits. These _______ count as
significant figures. (do/do not) - ANSWER do
Trailing zeros are zeros at the right end of the numbers. They ______ count as
significant figures if the number DOES NOT contain a decimal point. They
________ count as significant figures if the number DOES contain a decimal point.
(do/do not) - ANSWER do not, do
How many significant figures are in 0.048? - ANSWER 2
How many significant figures are in 16.07? - ANSWER 4
How many significant figures are in 9.300? - ANSWER 4
How many significant figures are in 150? - ANSWER 2
How many significant figures are in 2.12? - ANSWER 3
How many significant figures are in 4.500? - ANSWER 4
