<p>NAME ______DATE ______PERIOD ______Unit 1 Test Review </p><p>1. Tell if each of the following is a 2. Tell if each of the following is a 3. Classify each property as chemical or physical property: chemical or physical change: INTRINSIC or EXTRINSIC a. Yellow in color a. crumpling a piece of paper a. boiling point b. Bitter in taste b. burning a piece of paper b. density c. Boiling point of 212˚ c. digesting food c. mass d. Readily reacts with water d. melting a cube of wax d. volume e. Flammability e. baking a cake e. color f. Luster f. boiling water on the stove f. melting point</p><p>7. Read each of the following measurements to the correct precision. Include units. a. b. </p><p>8. Count the number of significant figures in the following: a. 9,678 ______c. 0.0000870 ______b. 10.280 ______d. 5,368,000 ______</p><p>9. Round each answer to 2 significant figures a. 2.56 + 12.989 = ______c. 1546 ÷ 246 = ______b. 25 x 30 = ______d. 7545 – 300 = ______</p><p>10. Express each of the following in scientific notation. a. 50200 ______d. 300000000 ______b. 0.00067 ______e. 5450000 ______c. 0.00000478 ______f. 4560000 ______8. Express each of the following in standard form. a. 1.00 x 1014 ______c. 1.20 x 10-5 ______b. 3.2 x 109 ______d. 6.95 x 10-15 ______</p><p>9. Calculate each of the following, make sure answers are in scientific notation with 3 significant figures. a. (4.35 x 104)(8.98 x 10-3) ______c. 65800/35 ______b. (9.99 x 107)  (3.56 x 1010) ______d. 18732 x 5146 ______</p><p>10. Describe the difference between accuracy and precision? What makes a set of data valid?</p><p>11. Look at the table of student data to the right. Describe the accuracy and precision of each group’s measurements. </p><p>14. Draw two particle diagrams. One representing a physical change and one a chemical change. 15. Define density and write the formula. </p><p>16. How do you know whether an object will sink or float in a liquid?</p><p>Calculate each of the following problems, SHOWING ALL WORK. 17. A piece of metal has a mass of 46.7g and a volume of 3.7 mL. What is its density?</p><p>18. An unknown substance is found to have a mass of 300g and volume of 50mL. What is its density?</p><p>19. Make each of the following metric conversions: show all work a) 0.0002384 m = ______mm 64.79 mL = ______L</p><p> b) 548.017 cL = ______kL 564 kg = ______cg</p><p> c) 0.0000000048 L = ______kL 248000000 mm = ______cm</p><p>20. Describe each of the particle diagrams below as a) pure substance or mixture b) monatomic element, diatomic element, or compound</p>