Chemistry Enrollment Pre-Test TPS

Chemistry Math Evaluation (24 Questions):

You may use a calculator, but no other resources (no internet, no people, no other materials). Please use the answer sheet provided at the end of this document to place all of your answers on. When completed with the test, email it to your teacher.

I. Give the answer, in scientific notation, to these problems involving scientific notation:

1. (2.15 x 103) (4.08 x 104) = a. 8.77 x 107 b. 8.77 x 1012 c. 5.27 x 10-1 d. 6.23 x 107

2. (5.34 x 10-5) (7.00 x 1010) = a. 3.74 x 10-50 b. 1.23 x 106 c. 3.74 x 105 d. 3.74 x 106

3. (5.00 x 107) (8.99 x 10-6) (4.20 x 104) = a. 1.89 x 107 b. 1.83 x 105 c. 1.89 x 10-4 d. 1.89 x 10-168

4. (1.50 x 10-7) / (3.007 x 10-5) = a. 1.51 x 10-2 b. 5.22 x 10-13 c. 4.99 x 10-3 d. 4.51 x 10-2

5. (3.00 x 107) / (8.44 x 10-6) = a. 3.56 x 1012 b. 3.55 x 1012 c. -5.44 x 10-42 d. 1.14 x 102

Mr. Riesen Chemistry Enrollment Pre-Test TPS

II. Solve these problems involving ratios, proportions, and percents:

6. In a certain classroom, the ratio of boys to girls is 4 to 7. If there are 35 girls in the class, then how many total students are there? a. 20 b. 55 c. 39 d. 12

7. The legend on a map says 0.5 inch represents 14 miles. How many inches are needed to represent 105 miles? a. 15” b. 3.75” c. 735” d. 245”

8. The ratio of red marbles to blue marbles is 5 to 7. If there are 156 marbles total, how many red marbles are there? a. 111 b. 218 c. 91 d. 65

9. What is 5 percent of 12? a. 6 b. 0.5 c. 0.6 d. 0.42

10. What percent of 35 is 16? a. 6% b. 22% c. 46 % d. 5%

The table below is printed on the side of a box of pancake mix:

Pancakes Amount of mix Amount of water 6 1 cup 3/4 cup 12 2 cups 1 1/2 cups 18 3 cups 2 1/4 cups

11. What is the ratio of mix to water in each case? a. 4: 3 b. 1: 12 c. ¾ : 1 d. 3: 4

12. What quantities of mix and water should be used if we want to make 15 pancakes? a. 2 ½ cups mix, 5 cups water b. 2 ½ cups mix, 3 1/3 cups water c. 2 ½ cups mix, 1 7/8 cups water d. 2 ½ cups mix, 3 cups water

13. What quantities of mix and water should be used if we want to make 100 pancakes? a. 16 2/3 cups mix, 20 cups water b. 16 2/3 cups mix, 22 cups water c. 16 2/3 cups mix, 24 cups water d. 16 2/3 cups mix, 12 ½ cups water

III. Solve these problems using conversion factors:

14. The exchange rate this week is 1 dollar for .85 euros. If I exchange 75 dollars, how many euros will I receive? a. 88.24 € b. 63.75 € c. 88.23 € d. 63 €

15. A roll of Christmas gift wrap is 2.5 meters long. What is the length of the paper in mm? a. 250 mm b. 2500 mm c. 25 mm d. 0.0025 mm

Given that: 1 mi = 1.61x103 m, 1 day = 24 hr, 1 hr = 60 min 1 min = 60 sec, and 1 yr = 365 days

16. Convert 55 miles per hour to meters/second (m/s) a. 25 m/s b. 20 m/s c. 88550 m/s d. 123 m/s

IV. Solve these problems involving multiplication and division of fractions:

17. What do you get when you multiply 1/2 and 3/7? a. 7/6 b. 14/3 c. 3/14 d. 6/7

18. What do you get when you divide 12/17 by 6/7? a. 1/5 b. 17/14 c. 14/17 d. 72/119

19. In simplest form, what do you get when you divide 81/21 by 27/49? a. 1/7 b. 72/343 c. 343/72 d. 7

V. Solve these problems for the variable requested:

20. Given: g - 1 = w; solve for: “g” a. g = w - 1 b. g = - w c. g = 1 + w d. g = 1 – w

21. Given: PV = nRT; solve for “R” a. R = PV / nT b. R = nT / PV c. R = PV - nT d. R = PVnT

22. Given: p = m / v solve for “m” a. m = p / v b. m = v / p c. m = p - v d. m = pv

23. Solve for x: 10 x + 15 < 25 + 5 x a. x > - 2 b. x < - 2 c. x > 2 d. x < 2

24. Solve for x: -2 x - 10 < 2 a. x > - 6 b. x < - 6 c. x > 6 d. x < 6

There are 3 REQUIRED essay questions included on the second page of the answer sheet. Please answer these questions honestly in clear, complete thoughts.

ANSWER SHEET Name:

There are 24 multiple choice questions AND 3 essay questions. You must score above a 75% to be approved for enrollment in Chemistry. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24.

There are 3 REQUIRED essay questions included on the next page. Please answer these questions honestly in clear, complete thoughts.

25. Honestly describe your work habits in terms of doing homework, labs, and other assignments on time.

26. Are you comfortable with technology (e.g. using the internet, working with computer applications and software, etc.)? Describe your experience with computer technology.

27. How well can you follow directions when reading or when spoken to? Describe and give examples.

Mr. Riesen