Question 1

Gasoline has a density of about 0.65 g/mL.How much does 34.0 L weigh in pounds?

Accepted Answer

Convert 34.0 L to mL then mult

Question 2

Of the elements listed,the most abundant by mass percent in the earth's crust is

Accepted Answer

A) silicon. 
B) aluminum. 
C) hydrogen. 
D) iron. 
E) sodium. 
A) silicon. 
B) aluminum. 
C) hydrogen. 
D) iron. 
E) sodium.

Question 3

In an introductory laboratory exercise,a student was asked to measure the volume of soda in a partially filled can in metric units.Which value below is most likely to be correct?

Accepted Answer

A) 1.0 kL 
B) 2.5 L 
C) 325 mL 
D) 550 μL 
E) 6.0 × 106 nL 
A) 1.0 kL 
B) 2.5 L 
C) 325 mL 
D) 550 μL 
E) 6.0 × 106 nL

Question 4

Which of the following causes a chemical change?

Accepted Answer

A) winding an alarm clock 
B) metabolizing fat 
C) slicing a tomato 
D) digging a hole 
E) pumping gasoline 
A) winding an alarm clock 
B) metabolizing fat 
C) slicing a tomato 
D) digging a hole 
E) pumping gasoline

Question 5

List three examples of pure substances and three examples of mixtures that have not been previously discussed in class.

Accepted Answer

Anything t

Question 6

Explain how density can be used to determine the volume of carbon tetrachloride (which is a liquid at room temperature)needed to make a mixture using 37.2 of carbon tetrachloride.

Accepted Answer

Notice that the student is not asked to

Question 7

The formula BaSO4 represents a compound composed of

Accepted Answer

A) two atoms of barium,four atoms of sulfur,and four atoms of oxygen. 
B) one atom of barium,four atoms of sulfur,and four atoms of oxygen. 
C) one atom of barium,one atom of sulfur,and four atoms of oxygen. 
D) one atom of boron,four atoms of sulfur,and four atoms of oxygen. 
E) one atom of boron,one atom of sulfur,and four atoms of oxygen. 
A) two atoms of barium,four atoms of sulfur,and four atoms of oxygen. 
B) one atom of barium,four atoms of sulfur,and four atoms of oxygen. 
C) one atom of barium,one atom of sulfur,and four atoms of oxygen. 
D) one atom of boron,four atoms of sulfur,and four atoms of oxygen. 
E) one atom of boron,one atom of sulfur,and four atoms of oxygen.

Question 8

Calculate the density of cyclohexane if a 50.0 g sample has a volume of 64.3 mL.

Accepted Answer

A) 114.3 g/mL 
B) 14.3 g/mL 
C) 1.29 g/mL 
D) 0.778 g/mL 
E) 0.322 g/mL 
A) 114.3 g/mL 
B) 14.3 g/mL 
C) 1.29 g/mL 
D) 0.778 g/mL 
E) 0.322 g/mL

Question 9

A reddish powder is heated gently in a loosely covered container.After the heating a silvery metal remains in the container,and a glowing wooden splint placed into the container bursts into flame.The original substance is a(an)________,and the solid and gas produced are ________.

Accepted Answer

A) element; compounds 
B) compound; elements 
C) mixture; compounds 
D) compound; compounds 
E) mixture; elements 
A) element; compounds 
B) compound; elements 
C) mixture; compounds 
D) compound; compounds 
E) mixture; elements

Question 10

Chemistry is important to the study of which of the following subjects?

Accepted Answer

A) Geology 
B) Biology 
C) Astronomy 
D) Physics 
E) All of these 
A) Geology 
B) Biology 
C) Astronomy 
D) Physics 
E) All of these

Question 11

In scientific notation,the number 0.0046 is expressed as

Accepted Answer

A) 46 × 10-3. 
B) 4.6 × 10-3. 
C) 4.6 × 10-2. 
D) 4.6 × 10-1. 
E) 46 × 10-1. 
A) 46 × 10-3. 
B) 4.6 × 10-3. 
C) 4.6 × 10-2. 
D) 4.6 × 10-1. 
E) 46 × 10-1.

Question 12

Amphetamine,a commonly abused drug,is composed of nine atoms of carbon,13 atoms of hydrogen,and one atom of nitrogen.The chemical formula of amphetamine is written

Accepted Answer

A) C9H13N1 
B) C9H13 
C) C9H13N 
D) C13H93N0 
E) C9H1N13 
A) C9H13N1 
B) C9H13 
C) C9H13N 
D) C13H93N0 
E) C9H1N13

Question 13

The conversion factor used to convert 55.6 km to miles is

Accepted Answer

A) 
  
B) 
  
C) 
  
D) 
  
E) 
  
A) 
  
B) 
  
C) 
  
D) 
  
E)

Question 14

Which element is not essential for human life?

Accepted Answer

A) C 
B) H 
C) P 
D) Pb 
E) Ca 
A) C 
B) H 
C) P 
D) Pb 
E) Ca

Question 15

How many meters are there in one kilometer?

Accepted Answer

A) 10-3 
B) 10-2 
C) 10-6 
D) 103 
E) 106 
A) 10-3 
B) 10-2 
C) 10-6 
D) 103 
E) 106

Question 16

If 55.0 g of olive oil has 877 cal of heat added to it at a room temperature of 26.0°C,what will be the final temperature of the olive oil? The specific heat of olive oil is 2.19 cal/g°C.

Accepted Answer

A) 33.3°C 
B) 7.3°C 
C) 19.0°C 
D) 26.0°C 
A) 33.3°C 
B) 7.3°C 
C) 19.0°C 
D) 26.0°C

Question 17

What is the chemical symbol for copper?

Accepted Answer

A) C 
B) Ca 
C) Cl 
D) Cr 
E) Cu 
A) C 
B) Ca 
C) Cl 
D) Cr 
E) Cu

Question 18

What is the numerical value of (2.1 × 104)(4.0 × 10-2)?

Accepted Answer

A) 8.4 
B) 8.4 × 102 
C) 8.4 × 10-2 
D) 8.4 × 10-8 
E) none of the above 
A) 8.4 
B) 8.4 × 102 
C) 8.4 × 10-2 
D) 8.4 × 10-8 
E) none of the above

Question 19

Each symbol denotes an element except

Accepted Answer

A) Co. 
B) CO. 
C) Cu. 
D) C. 
E) Cl. 
A) Co. 
B) CO. 
C) Cu. 
D) C. 
E) Cl.

Question 20

When the prefix centi is used in the metric system,a fundamental unit of measurement is multiplied by what factor?

Accepted Answer

A) 10-3 
B) 10-2 
C) 10-6 
D) 103 
E) 106 
A) 10-3 
B) 10-2 
C) 10-6 
D) 103 
E) 106

Exam 1: Matter and Measurements

Gasoline has a density of about 0.65 g/mL.How much does 34.0 L weigh in pounds?

Of the elements listed,the most abundant by mass percent in the earth's crust is

In an introductory laboratory exercise,a student was asked to measure the volume of soda in a partially filled can in metric units.Which value below is most likely to be correct?

Which of the following causes a chemical change?

List three examples of pure substances and three examples of mixtures that have not been previously discussed in class.

Explain how density can be used to determine the volume of carbon tetrachloride (which is a liquid at room temperature)needed to make a mixture using 37.2 of carbon tetrachloride.

The formula BaSO4 represents a compound composed of

Calculate the density of cyclohexane if a 50.0 g sample has a volume of 64.3 mL.

A reddish powder is heated gently in a loosely covered container.After the heating a silvery metal remains in the container,and a glowing wooden splint placed into the container bursts into flame.The original substance is a(an)________,and the solid and gas produced are ________.

Chemistry is important to the study of which of the following subjects?

In scientific notation,the number 0.0046 is expressed as

Amphetamine,a commonly abused drug,is composed of nine atoms of carbon,13 atoms of hydrogen,and one atom of nitrogen.The chemical formula of amphetamine is written

The conversion factor used to convert 55.6 km to miles is

Which element is not essential for human life?

How many meters are there in one kilometer?

If 55.0 g of olive oil has 877 cal of heat added to it at a room temperature of 26.0°C,what will be the final temperature of the olive oil? The specific heat of olive oil is 2.19 cal/g°C.

What is the chemical symbol for copper?

What is the numerical value of (2.1 × 104)(4.0 × 10-2)?

Each symbol denotes an element except

When the prefix centi is used in the metric system,a fundamental unit of measurement is multiplied by what factor?

Atoms and the Periodic Table

Ionic Compounds

Molecular Compounds

Classification and Balancing of Chemical Reactions

Chemical Reactions: Mole and Mass Relationships

Chemical Reactions: Energy, rates, and Equilibrium

Gases, liquids, and Solids

Solutions

Acids and Bases

Nuclear Chemistry

Introduction to Organic Chemistry: Alkanes

Alkenes, alkynes, and Aromatic Compounds

Some Compounds With Oxygen, sulfur, or a Halogen

Amines

Aldehydes and Ketones

Carboxylic Acids and Their Derivatives

Amino Acids and Proteins

Enzymes and Vitamins

The Generation of Biochemical Energy

Carbohydrates

Carbohydrate Metabolism

Lipids

Lipid Metabolism

Nucleic Acids and Protein Synthesis

Genomics

Protein and Amino Acid Metabolism

Chemical Messengers: Hormones, neurotransmitters, and Drugs

Body Fluids

Filters

The formula BaSO₄ represents a compound composed of

A reddish powder is heated gently in a loosely covered container.After the heating a silvery metal remains in the container,and a glowing wooden splint placed into the container bursts into flame.The original substance is a(an),and the solid and gas produced are .

What is the numerical value of (2.1 × 10⁴)(4.0 × 10^-2)?