Show:
1.3-1.5
1.6-1.8
1.9-1.10
2.1-2.3
2.4-2.5
100
Which of the following is the basic unit of mass in the SI?
What is kilogram
100
What is the answer, with the correct number of significant figures, for this problem? 4.392 g + 102.40 g + 2.51 g =
109.30 g
100
What is 6.5 m converted to inches?
260 in.
100
The energy associated with the motion of particles in a substance is called
What is heat.
100
Which of the following is a property of a solid? A) It takes the shape of the container. B) It fills the volume of the container. C) The particles move at a rapid rate. D) The interactions between its particles are very weak. E) The particles have fixed positions and are very close together.
What is E) The particles have fixed positions and are very close together.
200
The measurement 0.000 0043 m, expressed correctly using scientific notation, is
What is 4.3 × 10-6 m.
200
5.21 cm is the same distance as
0.0521 m.
200
Carrots are $0.79 per pound. What is the cost of 1.20 kg of carrots?
$2.10
200
The energy stored in the chemical bonds of a carbohydrate molecule is
What is potential energy.
200
Which of the following is a physical property of both liquids and gases? A) has its own shape B) has a definite volume C) has strong interactions between its particles D) has randomly arranged particles E) has large spaces between molecules
What is D) has randomly arranged particles
300
Which of the following numbers is the largest? A) 2.05 ×103 B) 2.05 × 10-12 C) 2.05 × 105 D) 2.05 × 108 E) 2.05
D) 2.05 × 108
300
How many centimeters are there in 57.0 in.?
145 cm
300
A dose of aspirin of 5.0 mg per kilogram of body weight has been prescribed to reduce the fever of an infant weighing 8.5 pounds. The number of milligrams of aspirin that should be administered is
19 mg.
300
A temperature of 41 °F is the same as
What is 5 °C.
300
In a gas, the distance between the particles is A) very close relative to the size of the molecules. B) close relative to the size of the molecules. C) fixed relative to the size of the molecules. D) small relative to the size of the molecules. E) very large relative to the size of the molecules.
What is E) very large relative to the size of the molecules.
400
Significant figures are important because they indicate
What is the precision of a measurement.
400
Which of the following measurements are NOT equivalent? A) 25 mg = 0.025 g B) 183 L = 0.183 kL C) 150. msec = 0.150 sec D) 84 cm = 8.4 mm E) 24 dL = 2.4 L
C) 150. msec = 0.150 sec
400
A nugget of gold with a mass of 521 g is added to 50.0 mL of water. The water level rises to a volume of 77.0 mL. What is the density of the gold?
19.3 g/mL
400
If the temperature is - 55 °C, what is the corresponding temperature on the Kelvin scale?
What is 218 K
400
Which of the following would NOT be a physical change? A) freezing water to make ice cubes B) tearing a piece of aluminum foil C) boiling water for soup D) burning gasoline in a lawnmower E) melting gold to make jewelry
What is D) burning gasoline in a lawnmower
500
The number of significant figures in the measurement of 45.030 mm is
five
500
Which of the following is the largest unit? A) millimeter B) micrometer C) meter D) decimeter E) kilometer
E) kilometer
500
Diamond has a density of 3.52 g/mL. What is the volume in cubic centimeters of a diamond with a mass of 15.1 g?
4.29 cm3
500
The primary substances of which all other things are composed are
What is elements
500
How many calories are required to raise the temperature of a 35.0 g sample of iron from 25 °C to 35 °C? Iron has a specific heat of 0.108 cal/g °C.
What is 38 cal