Question 1

A patient's urine sample has a density of 1.02 g/mL. If 1250 mL of urine was excreted by the patient in one day,what mass of urine was eliminated?

Accepted Answer

A) 1.28 kg 
B) 1225 g 
C) 1275 g 
D) 128 g 
A) 1.28 kg 
B) 1225 g 
C) 1275 g 
D) 128 g A

Question 2

Carry out the following calculation and report the answer using the proper number of significant figures: 38.251 × 73.1

Accepted Answer

A) 2796.1481 
B) 2796.15 
C) 2796.1 
D) 2796 
E) 2.80 × 103 
A) 2796.1481 
B) 2796.15 
C) 2796.1 
D) 2796 
E) 2.80 × 103 E

Question 3

When 0.022189 is correctly rounded to two significant figures the number becomes ________.

Accepted Answer

A) 0.02 
B) 0.022 
C) 22 
D) 0.023 
A) 0.02 
B) 0.022 
C) 22 
D) 0.023 B

Question 4

PVC plastic,which is used in pipes,is an example of a synthetic material.

Accepted Answer

A) True 
 B)False

Question 5

When a piece of magnesium (density = 1.738 g/mL)is placed in a container of liquid carbon tetrachloride (density = 1.59 g/mL),the piece of magnesium will float on top of the carbon tetrachloride.

Accepted Answer

A) True 
 B)False

Question 6

A zero counts as a significant figure when it occurs at the end of a number that contains a decimal point.

Accepted Answer

A) True 
 B)False

Question 7

Nitrogen gas (N2)would properly be classified as a compound.

Accepted Answer

A) True 
 B)False

Question 8

Which length is the longest?

Accepted Answer

A) 12 m 
B) 12,000 mm 
C) 12,000 μm 
D) 12,000 cm 
E) 0.0012 km 
A) 12 m 
B) 12,000 mm 
C) 12,000 μm 
D) 12,000 cm 
E) 0.0012 km

Question 9

The measurement 10.3 cm has more significant figures than the measurement 10.3 m.

Accepted Answer

A) True 
 B)False

Question 10

The two conversion factors for the equality 1 in = 2.54 cm are properly shown below.

Accepted Answer

A) True 
 B)False

Question 11

An oven is set for a temperature of 298 °F. What is the oven temperature in K?

Accepted Answer

A) 166 K 
B) 421 K 
C) 148 K 
D) 571 K 
E) 439 K 
A) 166 K 
B) 421 K 
C) 148 K 
D) 571 K 
E) 439 K

Question 12

When the liquid carbon tetrachloride (density = 1.59 g/mL)is added to water,the top layer will be the water layer.

Accepted Answer

A) True 
 B)False

Question 13

A compound cannot be broken down into simpler substances.

Accepted Answer

A) True 
 B)False

Question 14

If a package of nuts weighs 41.3 oz,what is the mass of the package expressed in milligrams?

Accepted Answer

A) 1.17 mg 
B) 1.17 × 103 mg 
C) 1.17 × 106 mg 
D) 117 mg 
E) 3.00 × 105 mg 
A) 1.17 mg 
B) 1.17 × 103 mg 
C) 1.17 × 106 mg 
D) 117 mg 
E) 3.00 × 105 mg

Question 15

If a 185-lb patient is prescribed 145 mg of the cholesterol lowering drug Tricor daily,what dosage is the patient receiving in mg/kg of his body weight?

Accepted Answer

A) 0.784 mg/kg 
B) 1.28 mg/kg 
C) 0.356 mg/kg 
D) 1.72 mg/kg 
E) 0.580 mg/kg 
A) 0.784 mg/kg 
B) 1.28 mg/kg 
C) 0.356 mg/kg 
D) 1.72 mg/kg 
E) 0.580 mg/kg

Question 16

A mixture can be separated into its components by physical changes.

Accepted Answer

A) True 
 B)False

Question 17

The water molecules in this image are best described as being in the liquid state.

Accepted Answer

A) True 
 B)False

Question 18

Which volume has the most uncertainty associated with the measurement?

Accepted Answer

A) 10 mL 
B) 10.0 mL 
C) 10.00 mL 
D) All have the same degree of uncertainty. 
A) 10 mL 
B) 10.0 mL 
C) 10.00 mL 
D) All have the same degree of uncertainty.

Question 19

Which number is the smallest?

Accepted Answer

A) 4.38 × 103 
B) 4.38 × 102 
C) 4.38 × 10-3 
D) 4.38 × 10-2 
E) 438 
A) 4.38 × 103 
B) 4.38 × 102 
C) 4.38 × 10-3 
D) 4.38 × 10-2 
E) 438

Question 20

What is the mass in kilograms of an individual who weighs 197 lb?

Accepted Answer

A) 197 kg 
B) 8.95 kg 
C) 89.5 kg 
D) 90 kg 
E) 433 kg 
A) 197 kg 
B) 8.95 kg 
C) 89.5 kg 
D) 90 kg 
E) 433 kg

Exam 1: Matter and Measurement

A patient's urine sample has a density of 1.02 g/mL. If 1250 mL of urine was excreted by the patient in one day,what mass of urine was eliminated?

Carry out the following calculation and report the answer using the proper number of significant figures: 38.251 × 73.1

When 0.022189 is correctly rounded to two significant figures the number becomes ________.

PVC plastic,which is used in pipes,is an example of a synthetic material.

When a piece of magnesium (density = 1.738 g/mL)is placed in a container of liquid carbon tetrachloride (density = 1.59 g/mL),the piece of magnesium will float on top of the carbon tetrachloride.

A zero counts as a significant figure when it occurs at the end of a number that contains a decimal point.

Nitrogen gas (N2)would properly be classified as a compound.

Which length is the longest?

The measurement 10.3 cm has more significant figures than the measurement 10.3 m.

The two conversion factors for the equality 1 in = 2.54 cm are properly shown below.

An oven is set for a temperature of 298 °F. What is the oven temperature in K?

When the liquid carbon tetrachloride (density = 1.59 g/mL)is added to water,the top layer will be the water layer.

A compound cannot be broken down into simpler substances.

If a package of nuts weighs 41.3 oz,what is the mass of the package expressed in milligrams?

If a 185-lb patient is prescribed 145 mg of the cholesterol lowering drug Tricor daily,what dosage is the patient receiving in mg/kg of his body weight?

A mixture can be separated into its components by physical changes.

The water molecules in this image are best described as being in the liquid state.

Which volume has the most uncertainty associated with the measurement?

Which number is the smallest?

What is the mass in kilograms of an individual who weighs 197 lb?

Atoms and the Periodic Table

Ionic Compounds

Covalent Compounds

Chemical Reactions

Energy Changes,reaction Rates,and Equilibrium

Gases,liquids,and Solids

Solutions

Acids and Bases

Nuclear Chemistry

Introduction to Organic Molecules and Functional Groups

Alkanes

Unsaturated Hydrocarbons

Organic Compounds That Contain Oxygen,halogen,or Sulfur

The Three-Dimensional Shape of Molecules

Aldehydes and Ketones

Carboxylic Acids,esters,and Amides

Amines and Neurotransmitters

Lipids

Carbohydrates

Amino Acids,proteins,and Enzymes

Nucleic Acids and Protein Synthesis

Metabolism and Energy Production

Carbohydrate,lipid,and Protein Metabolism

Filters

Nitrogen gas (N₂)would properly be classified as a compound.