Exam

 A theory is best described as
 generalization that explains a body of known facts or phenomena
 The liter is defined as
 1000cm^3
 the standard base unit for mass is
 kilogram
 symbol that represents volume
 mL
 A change in force of gravity on an object will affect
 weight
 What statement is true about mass
 mass of an object is determined by comparing it to an object of known mass
 Density is calculated
 dividing mass by volume
 density is a physical property
 measurement that closely agrees with an accepted value
 accurate
 numerical result is said to have good precision if
 repeated values agree closely
 if values for x and y vary as an inverse proportion
 their product is a constant
 the graph of 2 variables that are directly proportional to one another is
 a straight line
 .25g equals
 250mg
 1.06L of water equals
 1060mL
 The number of grams equal to .5kg is
 500
 A chemist obtained values 5.2246g 5.2353g and 5.2501g for the mass sample. without knowin the true mass these value have
 poor precision
 Which of these measurements has been expressed in sig fig?
 30.00mm
 When 5.7m is divided by 2s the quotient is correctly reported as
 3m/s
 How would .00930m be expressed in scientific notation
 9.30×10^-3m
 An analytical balanc can measur mass to the nearest .0001g.  In scientific notation the accuracy of the balance would be expressed as
 1×10^-4