Chapter 01 – Chemistry: The Study of Change
Chapter 01
Chemistry: The Study of Change
1.
A tentative explanation for a set of observations that can be tested by further experimentation is referred to as
2.
A concise verbal or mathematical statement of a relationship between phenomena that is always the same under the same
conditions is referred to as
Chapter 01 – Chemistry: The Study of Change
3. A unifying principle that explains a body of facts and relations is referred to as
4. Complete the following sentence. A hypothesis is
Chapter 01 – Chemistry: The Study of Change
5. Complete the following sentence. A scientific law is
6. Complete the following sentence. A theory is
Chapter 01 – Chemistry: The Study of Change
7. Choose the response that includes all the items listed below that are pure substances.
i. orange juice
ii. steam
iii. ocean water
iv. oxygen
v. vegetable soup
8. Which of the following is an example of a physical property?
9. Which one of the following is an example of a physical property?
10. Which one of the following represents a physical change?
11. All of the following are properties of sodium. Which one is a physical property of
sodium?
Chapter 01 – Chemistry: The Study of Change
12. All of the following are properties of tin. Which one is a chemical property of tin?
13. Which one of the following represents a chemical change?
14. Which of the following does not represent a chemical change?
Chapter 01 – Chemistry: The Study of Change
15. The SI prefixes kilo and milli represent, respectively:
17. The SI prefixes mega and deci represent, respectively:
Chapter 01 – Chemistry: The Study of Change
18. A centimeter corresponds to:
19. A microliter corresponds to:
Chapter 01 – Chemistry: The Study of Change
21. The element gallium melts at 29.8C. What temperature is this in F?
22. Many home freezers maintain a temperature of 0F. Express this temperature in C.
23.
The highest temperature ever recorded in Phoenix, Arizona, was 122F. Express this temperature in C.
24.
Dry ice (carbon dioxide) changes from a solid to a gas at –78.5C. What is this temperature in F?
25. Liquid nitrogen boils at –195.8C. Express the boiling point of liquid nitrogen in kelvin.
26. Liquid nitrogen boils at –195.8C. Express the boiling point of liquid nitrogen in F.
27. How many milliliters is 0.005 L?
Chapter 01 – Chemistry: The Study of Change
28. Express 7,500 nm as picometers.
29. The diameter of Earth is 12.7 Mm. Express this diameter in centimeters.
Chapter 01 – Chemistry: The Study of Change
30.
In 1828, the diameter of the U.S. dime was changed to approximately 18 mm. What is this diameter when expressed in
nanometers?
31. Which of the following represents the largest mass?
Chapter 01 – Chemistry: The Study of Change
32. The density of lead is 11.4 g/cm3 at 25C. Calculate the volume occupied by 25.0 g of
lead.
33. Iron has a density of 7.86 g/cm3. The volume occupied by 55.85 g of iron is
Chapter 01 – Chemistry: The Study of Change
34.
Bromine is a red liquid at 25C. Its density is 3.12 g/cm3. What is the volume of 28.1 g of liquid bromine?
35. What is the volume of a 2.5 g block of metal if its density is 4.75 g/cm3?
Chapter 01 – Chemistry: The Study of Change
36.
Which of the following objects will sink when dropped into a bucket of water? Given: density of water = 1.00 g/cm3)
37. You just measured a block of wood and obtained the following information:
mass = 55.120 g
length = 8.5 cm
height = 4.3 cm
width = 3.3 cm
Determine the volume and density of the wood block.
Chapter 01 – Chemistry: The Study of Change
38.
You just measured a metal cylinder and obtained the following information:
mass = 3.543 g
diameter = 0.53 cm
height = 4.4 cm
Determine the volume (V) and density of the cylinder. (V=r2 h, where r = radius, h = height, = 3.14)
39.
You just measured a sugar cube and obtained the following information:
mass = 3.48 g
height = length = width = 1.3 cm
Determine the volume and density of the cube. Suppose the sugar cube was added to a cup of water. Before it dissolves, will
the sugar cube float or sink to the bottom?
Chapter 01 – Chemistry: The Study of Change
40. Express the number 26.7 in scientific notation.
41. Express the number 0.000053 in scientific notation.
42. The number 1.050 109 has how many significant figures?
Chapter 01 – Chemistry: The Study of Change
43. How many significant figures are there in 0.3070 g?
44.
After carrying out the following operations, how many significant figures are appropriate to how in the result?
(13.7 + 0.027) 8.221
Chapter 01 – Chemistry: The Study of Change
45. How many significant figures does the result of the following operation contain?
8.52010 7.90
46. How many significant figures does the result of the following sum contain?
8.5201 + 1.93