Chemistry NAME Unit 1 Multiple choice Mark a CAPTIAL by p0mk8


									Chemistry                                              NAME: ____________________________
Unit 1

Multiple choice: Mark a CAPTIAL letter on the answer sheet provided for the best possible choices
listed for each problem.

1.   The study of the composition and structure of matter is the domain of which field of science?
     A. chemistry         B. biology                 C. geology                  D. physics

2.   Chemistry is chiefly concerned with the study of which of the following types of changes in
     A. changes in amount
     B. changes in shape
     C. changes in volume
     D. changes in composition
     E. changes in location

3.   The differences between a scientific theory and a scientific law is that _____ .
     A. there is no difference
     B. a law only summarizes observations; a theory attempts to explain observations
     C. a theory only summarizes observations; a law attempts to explain observations

4.   A hypothesis is _____ .
     A. a concise statement that summarizes the results of a wide variety of experiments
     B. an observation recorded from experimentation
     C. a prediction of expected results
     D. a thoroughly tested model

5.   Matter is defined as anything that ___ .
     A. has mass and takes up space
     B. has a fixed volume and weight
     C. has a definite volume
     D. can be weighed on a balance

6.   Which of the following is a qualitative measurement?
     A. 100 feet
     B. 45.7 g
     C. blue precipitate
     D. I got 90% on my last chemistry test

7.   A golf ball has more mass than a tennis ball because it ____.
     A. contains more matter
     B. takes up more space
     C. has a definite composition
     D. contains different kinds of matter

8.   All of the following changes to a metal are physical changes EXCEPT ____ .
     A. bending
     B. melting
     C. cutting
     D. polishing
     E. rusting

9.   Which of the following is NOT part of the scientific process?
     A. Hypotenuse
     B. Hypothesis
     C. Theory
     D. Experimentation
Chemistry                                              NAME: ____________________________
Unit 1

10. What must occur for a process to be a chemical reaction?
    A. the process must involve a change in mass
    B. the process must involve a change in physical properties
    C. the process must involve a change in chemical properties
    D. the process must involve a change volume

11. The diameter of a carbon atom is 0.000 000 000 154 m. What is this number expressed in scientific
    A. 1.54 x 1010 m
    B. 1.54 x 10-12 m
    C. 1.54 x 1012 m
    D. 1.54 x 10-10 m

12. What is the result of multiplying (2.5 x 1010 cm) x (3.5 x 10-7 cm)?
    A. 8750 cm2
    B. 8.75 x 10-3 cm2
    C. 8.8 x 103 cm2
    D. 8.750 cm2

13. What is the measurement 1042 L rounded off to two significant figures?
    A. 1.1 x 103 L
    B. 1.0 x 103 L
    C. 1040 L
    D. 1050 L
    E. none of the above

14. A _____ represents a ratio based on an equivalence statement between two measurements.
    A. congress
    B. congruency
    C. kilograms
    D. conversion factors

15. The SI base unit for mass is ____ .
    A. kilogram
    B. meter
    C. gram
    D. kilometer

16. The derived metric unit for volume is _____ .
    A. gramameter
    B. meter
    C. m3
    D. dm3
    E. liter

17. In relationship to volume 1 ml equals ____ cm3.
    A. 1
    B. 100
    C. 100
    D. 1000

18. The SI prefix that means 10-9 is _____ .
Chemistry                                             NAME: ____________________________
Unit 1
    A.   p
    B.   c
    C.   g
    D.   r
    E.   n

19. The temperature at which all matter theoretically stops moving is _____ .
    A. 0 F
    B. 0 K
    C. 277 K
    D. 0 C
    E. –237 C

20. How many ml are in 3 L?
    A. 0.300 ml
    B. 3 x 10-3 ml
    C. 3 x 103 ml
    D. 3000. ml

Problem section: Show all work on the answer sheet provided. You must show dimensional analysis
to receive full credit when applicable.

21. How many significant figures are in the measurement 770 grams?

22. How many significant figures are in the measurement 0.00180 liters?

Perform the following operations. Make sure your answer has the correct number of significant figures.
23. (10.00 x 3.00) / (1678 x 0.090) =

24. (14.5 / 5.5) x (20.00 x 16.00) =

25. Convert 100.5 dm3 into liters.

26. Convert 1.58 x 108 dollars into nickels

27. Convert 55.58 miles / hr into km / s. ( 0.62317km = 1 mile)

To top