Portage General Chemistry Exam 1
How many ounces are in a pound? - (correct Answer) - 16
How many quarts are in a gallon? - (correct Answer) - 4
K to °C - (correct Answer) - K (larger) - 273 = °C (smaller)
°C to K - (correct Answer) - °C (smaller) + 273 = K (larger)
°F to °C - (correct Answer) - (°F - 32) / 1.8 = °C
°C to °F - (correct Answer) - (°C x 1.8) + 32 = °F
What is a way to remember Celsius to Fahrenheit conversion? - (correct Answer) - MA and SD are both
US state abbreviations
All densities are dependent on_______ or ____________ - (correct Answer) - -molecular weights
-atomic weights
density formula - (correct Answer) - D=m/v
define accuracy - (correct Answer) - the nearness of the measured value to the actual value of the
quantity being measured.
define precision - (correct Answer) - degree of agreement between several measured values of a
quantity.
What are rules for determining sig figs? - (correct Answer) - -All non-zero digits are significant.
-All zeros between or following non-zero numbers are significant.
-Zeros to the left of a decimal or preceding other non-zero numbers are not significant.
How many sig figs in 1000 - (correct Answer) - 1
How many sig figs in 1000. - (correct Answer) - 4
How do sig figs work in multiplication or division calculations? - (correct Answer) - The result should be
rounded off so as to contain the same number of significant figures as the measurement with the least
number of significant figures
128..20 (sig figs) - (correct Answer) - 2.512
How many ounces are in a pound? - (correct Answer) - 16
How many quarts are in a gallon? - (correct Answer) - 4
K to °C - (correct Answer) - K (larger) - 273 = °C (smaller)
°C to K - (correct Answer) - °C (smaller) + 273 = K (larger)
°F to °C - (correct Answer) - (°F - 32) / 1.8 = °C
°C to °F - (correct Answer) - (°C x 1.8) + 32 = °F
What is a way to remember Celsius to Fahrenheit conversion? - (correct Answer) - MA and SD are both
US state abbreviations
All densities are dependent on_______ or ____________ - (correct Answer) - -molecular weights
-atomic weights
density formula - (correct Answer) - D=m/v
define accuracy - (correct Answer) - the nearness of the measured value to the actual value of the
quantity being measured.
define precision - (correct Answer) - degree of agreement between several measured values of a
quantity.
What are rules for determining sig figs? - (correct Answer) - -All non-zero digits are significant.
-All zeros between or following non-zero numbers are significant.
-Zeros to the left of a decimal or preceding other non-zero numbers are not significant.
How many sig figs in 1000 - (correct Answer) - 1
How many sig figs in 1000. - (correct Answer) - 4
How do sig figs work in multiplication or division calculations? - (correct Answer) - The result should be
rounded off so as to contain the same number of significant figures as the measurement with the least
number of significant figures
128..20 (sig figs) - (correct Answer) - 2.512
