Conversions
Change 5.02 x 103 to decimal notation.
What is 5020?
_______________ is the act of comparing an unknown quantity to a standard unit.
What is measurement?
A chemist wants to measure the mass of a lump of coal. What SI base unit will he use?
What is a kilogram?
You measure products of a chemical reaction three times and get 1.56 g, 1.59 g, and 1.60 g. The actual mass is 3.62 g. Your measurements are
What is precise but not accurate?
Significant digits apply only to __________ data.
What is measured?
25,500 grams equal _____ kilograms.
What is 25.5?
The scale of a measuring instrument is __________, or accurately subdivided into measurement units.
What is graduated?
Which of these SI units would measure the volume of a substance?
What is a cubic meter?
You measure products of a chemical reaction three times and get 4.12 g, 3.25 g, and 4.79 g. The actual mass is 2.25 g. Your measurements are:
What is neither accurate nor precise?
All __________ digits are considered significant in a measurement.
What is nonzero?
One gallon of gasoline (3785 mL) has a mass of 2540 g. What is the density of gasoline? Use the correct number of significant digits.
What is 0.671 g/mL?
True/False: The significant digits in a measurement are only those that are known for certain.
What is true?
The square meter (m2) is a derived SI unit for __________.
What is area?
You measure the products of a chemical reaction three times and get 6.15 g, 6.16 g, and 6.13 g. The actual mass is 6.14 g. Your measurements are:
What is both accurate and precise?
How many significant digits are in 137 g?
What is 3?
Using bridge notation, convert 463 kg to milligrams.
What is 4.63 x 108 mg?
True/False: Mathematically, a conversion factor is equal to zero.
What is false?
What is the correct way to abbreviate milliliter?
What is mL?
The smaller the percent error of a measurement is, the more __________ the measurement is.
What is accurate?
How many significant digits are in 0.017 000 g?
What is 5?
What volume does a 1-carat (0.2 g) diamond occupy? (density = 3.27 g/mL)
What is 0.06 mL?
True/False: A measurement is made of two essential parts: a number and a unit of measurement.
What is true?
The prefix nano means:
What is billionth?
To calculate the percent error, you must take the absolute value of the __________ value minus the __________ value, divide by the __________ value, and multiply by 100%.
What is observed / accepted / accepted ?
Which of these has the greatest number of significant digits: 35,620 cars, 2.35 m, 4.2 km, or 25,000 mL?
What is 2.35 m?