University:
Glendale Community College
Course:
MAT140 | College Mathematics
Academic year:

2021
Views:

287

Pages:

3
Author:

Kade Goodman

Name: ________________ Section: ____________ Chapter 1 Practice Worksheet: Matter and Measurement 1) Use metric prefixes to calculate the following conversions: a. 156 cm = ____________________ m b. 4.870 km = _____________________ cm c. 7809 mL = ______________________ ML d. 98.412 GL = ____________________ cL e. 1234 m = ______________________ m f. 675 nm = _______________________ m g. 0.00549 kg = _____________________ mg 2) How many significant figures are in each of the following measurements? a. 0.002960 g ______ b. 1000.00 g ______ c. 100,000 g ______ d. 1.000 x 102 g ______ e. 1.20980 g ______ 3) Write the result of each calculation. Remember to include units and the correct number of significant figures. a. (200.5 m + 2.59 m) x 60.7 m = b. (3.3 x 10-4 g) ÷ (9.9 x 10-5 mL) = c. (1.0 x 105 s) x (15.0 m/s) = d. (25.8 g) ÷ (2.00 g/mL) = e. 153.6789 g – 42.3409 g = 4) Temperature Conversions: a. Room temperature is about 25 oC. What is this temperature in units of Kelvin? b. The temperature at which carbon dioxide sublimes is about 195 K. What is this temperature in units of degrees Celsius? c. Which of the following temperatures is/are impossible? 0 K is the lowest possible temperature that can be obtained. 4000 K 4000 oC -200 K -200 oC -400 oC page 1 Name: ________________ Section: ____________ 5) Unit Conversions: a. Convert 10.0 miles/hour to meters/second. Use the conversion factors given in the text. b. Convert 5.0 cm3 to L. c. Convert 3.0 cm3 to mm3. Watch the cubed units. 6) Given that the density of olive oil is 0.92 g/mL, calculate the following: a. The mass of 20.0 mL of olive oil. b. The volume of 20.0 g of olive oil. 7) Which of the following metals will occupy the largest volume per gram of metal? (Hint: Is this asking for the least dense or most dense material?) Gold d = 19.3 g/cm3 Mercury d = 13.55 g/cm3 Lead d = 11.3 g/cm3 8) What is the difference between accuracy and precision? Provide examples. 9) If your car uses 22 miles per gallon and you go on a 400-mile road trip, how much gas do you need. If your tank is 16 gallons, how many times do you have to fill up. If gas costs $3.27/gallon, how much did you spend on gas (assuming you bought just enough to reach your destination)? page 2 Name: ________________ Section: ____________ 10) A package of aluminum foil contains 100.0 ft2 of product and weighs exactly 1.1 lb. The density of aluminum foil is 2.70 g/cm3. Find the thickness of the aluminum foil in millimeters. (1 lb = 453.6 g) page 3