1st Quarter Reviewer: S.Y. 2011-2012 Ver 3

Hi there. Chemistry exam is hours away... chill, relax, chillax, whatever. Here's another reviewer to help you calm your nerves.

Time Frame: 30 minutes
Source:http://cwx.prenhall.com/bookbind/pubbooks/hill/chapter1/multiple1/deluxe-content.html

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1.	Which of the following is not an example of matter?
	air
	iron
	heat
	water
	wood
2.	A person tries to start his car in the morning and it does not start. He thinks that the car may be out of gas. His idea concerning why the car does not start is an example of:
	a hypothesis
	an experiment
	law
	theory
	data
3.	Which of the following represents a change of mass?
	An astronaut is in orbit about the earth and is in weightless condition.
	An astronaut is walking on the moon and can jump great distances.
	An astronaut takes off in a rocket ship and feels the effects of acceleration.
	The astronaut is in a rapidly dropping elevator at the Space Center.
	An astronaut goes on a diet and loses five kilograms.
4.	Which of the following is a homogeneous mixture?
	helium gas used to fill a balloon
	high octane gasoline
	Italian salad dressing
	nails in water
	sodium chloride
5.
6.	Convert 50.0 km to m.
	5.00 x 103 m
	5 x 104 m
	5.00 x 104 m
	20.0 m
	5.00 x 10-2 m
7.	Convert 87.6 µg to kg.
	8.76 x 104 kg
	8.76 x 10-8 kg
	8.76 x 108 kg
	8.76 x 10-5 kg
	0.0876 kg
8.	Convert 0.0962 km/min to m/s.
	9.62 m/s
	1.60 m/s
	1.60 x 10-3 m/s
	2.67 x 10 -2 m/s
	5.76 x 103 m/s
9.	Convert 10.1 meters per second to miles per hour.
	6.29 x 10-3 mi/h
	1.43 x 103 mi/h
	36.4 mi/h
	377 mi/h
	22.6 mi/h
10.	Convert 87.4 cm² to m².
	8.74 x 10-3 m²
	8.74 x 10³m²
	8.74 x 10+5m²
	0.874 m²
	8.74 x 10-5m²
11.	Convert 46.4 m³ to liters.
	46.4 L
	4.64 x 104 L
	4.64 L
	4.64 x 10² L
	4.64 x 10-8 L
12.	Which of the following is the greatest length?
	a 1.5 m chain
	a 1 dm pencil
	a 5.0 cm gold chain
	2500 grams of sugar
	a yardstick
13.	How many significant figures are there in this measured quantity? 0.040930
	3
	4
	6
	5
	7
14.	How many significant figures are there in this measured quantity? 5.010 x 10³
	5
	2
	6
	4
	3
15.	Express the following measured quantity in exponential notation. 2800 meters
	28.00 x 10² m
	2.8 x 10³ m
	2.80 x 10³ m
	2.800 x 10³ m
	2.800 x 10-3 m
16.	Express the following number in exponential notation rounded to three significant figures. 87,660
	8.77 x 10-4
	8.77 x 104
	0.877 x 105
	876.60 x 102
	8.76 x 104
17.	Perform the indicated operation and give an answer with the proper number of significant figures. 48.2 m + 3.87 m + 48.4394 m
	101 m
	100.4 m
	100.51 m
	100.5094 m
	100.5 m
18.	Perform the indicated operation and give an answer with the proper number of significant figures. 451 g - 15.46 g
	466 g
	435.54 g
	435.5 g
	4.4 x 102 g
	436 g
19.	Perform the indicated operations and give an answer with the proper number of significant figures. (33.58 x 1.007) / .00705
	4796
	4800
	4796.462411
	4.8 x 103
	4.80 x 103
20.	Perform the indicated operations and give an answer with the proper number of significant figures. (2.023 - 1.8 x 10-3) / 1.05 x 104
	1.92495 x 10-4
	2.02
	1.9 x 10-4
	1.92 x 10-4
	0.212
21.	What is the density of a salt solution if 50.0 mL has a mass of 57.0 g?
	1.14 g/mL
	2.85 x 103 g/mL
	3.51 x 10-4 g/mL
	0.877 mL/g
	1.14 g/L
22.	What is the mass, in kg, of 2.75 liters of the liquid glycerol, which has a density of 1.26 g/mL?
	0.458 kg
	2.18 kg
	3.47 x 103 kg
	3.47 kg
	0.00347 kg
23.	What is the volume of 5.79 mg of gold? The density of gold is 19.3 g/cm³.
	3,333 cm³
	0.112 cm³
	3.00cm³
	3 x 10-4 cm³
	3.00 x 10-4 cm³
24.	A rectangular block measures 3.00 cm by 1.25 cm by 1.50 cm and has a mass of 28.12 g. What is the density?
	9.37 g/cm³
	6.25 g/cm³
	7.50 g/cm³
	5.00 g/cm³
	0.200 g/cm³
25.	Dust from air that is not significantly polluted is deposited ("dustfall") at a typical rate of 10 tons/mi² per month. What is this dustfall expressed in mg/m² per hour? Assume a month of 30 days.
	2.44 x 10-3 mg / m²·hr
	4.87 mg / m²·hr
	4.87 x 10-3 mg / m²·hr
	12.6 mg / m²·hr
	7.83 mg / m²·hr