Unit 1 Review: Matter and Measurement

NAME ______DATE ______PERIOD ______Unit 1 Test Review

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

7. Read each of the following measurements to the correct precision. Include units. a. b.

8. Count the number of significant figures in the following: a. 9,678 ______c. 0.0000870 ______b. 10.280 ______d. 5,368,000 ______

9. Round each answer to 2 significant figures a. 2.56 + 12.989 = ______c. 1546 ÷ 246 = ______b. 25 x 30 = ______d. 7545 – 300 = ______

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 ______

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 ______

10. Describe the difference between accuracy and precision? What makes a set of data valid?

11. Look at the table of student data to the right. Describe the accuracy and precision of each group’s measurements.

14. Draw two particle diagrams. One representing a physical change and one a chemical change. 15. Define density and write the formula.

16. How do you know whether an object will sink or float in a liquid?

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?

18. An unknown substance is found to have a mass of 300g and volume of 50mL. What is its density?

19. Make each of the following metric conversions: show all work a) 0.0002384 m = ______mm 64.79 mL = ______L

b) 548.017 cL = ______kL 564 kg = ______cg

c) 0.0000000048 L = ______kL 248000000 mm = ______cm

20. Describe each of the particle diagrams below as a) pure substance or mixture b) monatomic element, diatomic element, or compound