Question 1

The juice from an orange is a mixture.

Accepted Answer

A) True 
 B)False

Question 2

77 K is colder than 4 K.

Accepted Answer

A) True 
 B)False

Question 3

A smart phone has dimensions of 4.9 inches (height),2.3 inches (width)and 8.0 millimeters (depth).What is the volume of the smart phone in cubic centimeters? (1 in = 2.54 cm)

Accepted Answer

A) 58 cm3 
B) 1.7 x 105 cm3 
C) 90 cm3 
D) 3.4 cm3 
E) 34 cm3 
A) 58 cm3 
B) 1.7 x 105 cm3 
C) 90 cm3 
D) 3.4 cm3 
E) 34 cm3

Question 4

The number 6.0448,rounded to 3 decimal places,becomes 6.045.

Accepted Answer

A) True 
 B)False

Question 5

The ripening of fruit,once picked,is an example of physical change.

Accepted Answer

A) True 
 B)False

Question 6

An empty flask's mass is 17.4916 g,and its mass is 43.9616 g when filled with water at 20.0°C (density = 0.9982 g/mL).The density of "heavy water" at 20.0°C is 1.1053 g/mL.What is the mass of the flask when filled with heavy water at 20.0°C?

Accepted Answer

A) 29.2573 g 
B) 46.8016 g 
C) 46.7489 g 
D) 29.3100 g 
E) 43.9140 g 
A) 29.2573 g 
B) 46.8016 g 
C) 46.7489 g 
D) 29.3100 g 
E) 43.9140 g

Question 7

There are 58 counties in California and about 660,000 people in each county.How many million people live in California?

Accepted Answer

A) 383 million people 
B) 38 million people 
C) 40 million people 
D) 58 million people 
E) 11 million people 
A) 383 million people 
B) 38 million people 
C) 40 million people 
D) 58 million people 
E) 11 million people

Question 8

If two numbers are multiplied together,one which has 3 significant figures and the other which has 4 significant figures,explain how to round the answer.

Accepted Answer

The answer will have 3 signifi

Question 9

If the density of corn syrup is 1.380 g/mL and a sample of corn syrup has a mass of 32 grams,what is the volume of corn syrup,in liters?

Accepted Answer

A) 43 L 
B) 23 L 
C) 0.043 L 
D) 0.023 L 
E) 2.3 L 
A) 43 L 
B) 23 L 
C) 0.043 L 
D) 0.023 L 
E) 2.3 L

Question 10

___________ is the term used to indicate a measuring device is accurate.(Hint: Often used when measuring the volume of a liquid.)

Accepted Answer

Graduated

Question 11

Select the answer with the correct number of decimal places for the following sum: 13.914 cm + 243.1 cm + 12.00460 cm =

Accepted Answer

A) 269.01860 cm 
B) 269.0186 cm 
C) 269.019 cm 
D) 269.02 cm 
E) 269.0 cm 
A) 269.01860 cm 
B) 269.0186 cm 
C) 269.019 cm 
D) 269.02 cm 
E) 269.0 cm

Question 12

If a patient in the hospital is running a temperature of 39.5°C,what is this in degrees Fahrenheit?

Accepted Answer

A) 99°F 
B) 101.3°F 
C) 102.4°F 
D) 103.1°F 
E) 104°F 
A) 99°F 
B) 101.3°F 
C) 102.4°F 
D) 103.1°F 
E) 104°F

Question 13

How many significant figures are in 0.006570?

Accepted Answer

A) 3 
B) 4 
C) 5 
D) 6 
E) 7 
A) 3 
B) 4 
C) 5 
D) 6 
E) 7

Question 14

Which one of these represents a physical change?

Accepted Answer

A) Water,when heated,forms steam. 
B) Bleach turns hair yellow. 
C) Sugar,when heated,becomes brown. 
D) Milk turns sour. 
E) Apples,when exposed to air,turn brown. 
A) Water,when heated,forms steam. 
B) Bleach turns hair yellow. 
C) Sugar,when heated,becomes brown. 
D) Milk turns sour. 
E) Apples,when exposed to air,turn brown.

Question 15

The result of (3.8621 × 1.5630)- 5.98 is properly written as

Accepted Answer

A) 0.06. 
B) 0.056. 
C) 0.0565. 
D) 0.05646. 
E) 0.056462. 
A) 0.06. 
B) 0.056. 
C) 0.0565. 
D) 0.05646. 
E) 0.056462.

Question 16

Walking fast can consume 5.0 kcal per minute.How many hours of exercise are required to consume 450 kcal,the energy in a large candy bar?

Accepted Answer

A) 7.5 hr 
B) 1.25 hr 
C) 1.75 hr 
D) 1.5 hr 
E) 1 hr 
A) 7.5 hr 
B) 1.25 hr 
C) 1.75 hr 
D) 1.5 hr 
E) 1 hr

Question 17

After carrying out the operation (13.7 + 0.027)÷ 8.221,how many significant figures are appropriate to show in the result?

Accepted Answer

A) 1 
B) 2 
C) 3 
D) 4 
E) 5 
A) 1 
B) 2 
C) 3 
D) 4 
E) 5

Question 18

A scoop of vanilla ice cream is a pure substance.

Accepted Answer

A) True 
 B)False

Question 19

Which of the following speeds is the greatest? (1 mi = 1609 m)

Accepted Answer

A) 40 mi/h 
B) 2.0 × 105 mm/min 
C) 40 km/h 
D) 0.74 km/min 
E) 400 m/min 
A) 40 mi/h 
B) 2.0 × 105 mm/min 
C) 40 km/h 
D) 0.74 km/min 
E) 400 m/min

Question 20

Which of the following represents the greatest mass?

Accepted Answer

A) 2.0 x 103 mg 
B) 10.0 dg 
C) 0.0010 kg 
D) 1.0 x 106 μg 
E) 3.0 x 1012 pg 
A) 2.0 x 103 mg 
B) 10.0 dg 
C) 0.0010 kg 
D) 1.0 x 106 μg 
E) 3.0 x 1012 pg

Exam 1: Chemistry: the Central Science

The juice from an orange is a mixture.

77 K is colder than 4 K.

A smart phone has dimensions of 4.9 inches (height),2.3 inches (width)and 8.0 millimeters (depth).What is the volume of the smart phone in cubic centimeters? (1 in = 2.54 cm)

The number 6.0448,rounded to 3 decimal places,becomes 6.045.

The ripening of fruit,once picked,is an example of physical change.

An empty flask's mass is 17.4916 g,and its mass is 43.9616 g when filled with water at 20.0°C (density = 0.9982 g/mL).The density of "heavy water" at 20.0°C is 1.1053 g/mL.What is the mass of the flask when filled with heavy water at 20.0°C?

There are 58 counties in California and about 660,000 people in each county.How many million people live in California?

If two numbers are multiplied together,one which has 3 significant figures and the other which has 4 significant figures,explain how to round the answer.

If the density of corn syrup is 1.380 g/mL and a sample of corn syrup has a mass of 32 grams,what is the volume of corn syrup,in liters?

___________ is the term used to indicate a measuring device is accurate.(Hint: Often used when measuring the volume of a liquid.)

Select the answer with the correct number of decimal places for the following sum: 13.914 cm + 243.1 cm + 12.00460 cm =

If a patient in the hospital is running a temperature of 39.5°C,what is this in degrees Fahrenheit?

How many significant figures are in 0.006570?

Which one of these represents a physical change?

The result of (3.8621 × 1.5630)- 5.98 is properly written as

Walking fast can consume 5.0 kcal per minute.How many hours of exercise are required to consume 450 kcal,the energy in a large candy bar?

After carrying out the operation (13.7 + 0.027)÷ 8.221,how many significant figures are appropriate to show in the result?

A scoop of vanilla ice cream is a pure substance.

Which of the following speeds is the greatest? (1 mi = 1609 m)

Which of the following represents the greatest mass?

Atoms Molecules and Ions

Stoichiometry Ratios of Combination

Reactions in Aqueous Solutions

Thermochemistry

Quantum Theory and the Electronic Structure of Atoms

Electron Configuration and the Periodic Table

Chemical Bonding I Basic Concepts

Chemical Bonding Ii Molecular Geometry and Bonding Theories

Gases

Intermolecular Forces and the Physical Properties of Liquids and Solids

Modern Materials

Physical Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Acid-Base Equilibria and Solubility Equilibria

Entropy Free Energy and Equilibrium

Electrochemistry

Nuclear Chemistry

Environmental Chemistry

Coordination Chemistry

Metallurgy and the Chemistry of Metals

Nonmetallic Elements and Their Compounds

Organic Chemistry

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