Question 1

Which of the following substances are composed of heteroatomic molecules?

Accepted Answer

A) an iron nail 
B) oxygen 
C) copper wire 
D) water 
A) an iron nail 
B) oxygen 
C) copper wire 
D) water

Question 2

Over the counter (OTC)medicines are dangerous because they are not regulated.

Accepted Answer

A) True 
 B)False

Question 3

A Celsius degree is the same size as a Kelvin degree.

Accepted Answer

A) True 
 B)False

Question 4

Match between columns
                        Premises:  Molecules that contain three atoms

Accepted Answer

The Answer of Homoatomic molecules and Diatomic molecules and Polyatomic is...

Question 5

One can always rely on the health information found on the world wide web.

Accepted Answer

A) True 
 B)False

Question 6

Which of the following consists of a single chemical species?

Accepted Answer

A) solution 
B) homogeneous mixture 
C) heterogeneous mixture 
D) compound 
A) solution 
B) homogeneous mixture 
C) heterogeneous mixture 
D) compound

Question 7

If 6526 is added to 15.0, the answer should have two significant figures.

Accepted Answer

A) True 
 B)False

Question 8

Two pure substances A and B react to form a new pure substance C. From this, we may conclude that

Accepted Answer

A) A and B are both elements 
B) C is a compound, A and B may or may not be elements 
C) C is an element, A and B are compounds 
D) A, B, and C are all compounds 
A) A and B are both elements 
B) C is a compound, A and B may or may not be elements 
C) C is an element, A and B are compounds 
D) A, B, and C are all compounds

Question 9

Which of the following set-ups will allow you to calculate the cost of fruit in dollars per gram, if the price is given as 0.79 dollars per pound?

Accepted Answer

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

Question 10

Explain the differences between physical and chemical changes with examples.

Accepted Answer

Physical changes are the changes that do

Question 11

The fact that iron (Fe)corrodes when exposed to water and air is a

Accepted Answer

A) physical property. 
B) metal property. 
C) chemical property. 
D) real property. 
A) physical property. 
B) metal property. 
C) chemical property. 
D) real property.

Question 12

Explain the differences between a pure substance and a mixture with examples.

Accepted Answer

A pure substance has a constant composit

Question 13

The figure shown below is an example of what type of molecule?

Accepted Answer

A) homoatomic, triatomic 
B) heteroatomic, polyatomic 
C) homoatomic, polyatomic 
D) heteroatomic, triatomic 
A) homoatomic, triatomic 
B) heteroatomic, polyatomic 
C) homoatomic, polyatomic 
D) heteroatomic, triatomic

Question 14

How many significant figures are justified in a measurement of a length that is between 9 and 10 centimeters if the measuring device (ruler)has smallest divisions of 0.1 cm?

Accepted Answer

A) one 
B) two 
C) three 
D) four 
A) one 
B) two 
C) three 
D) four

Question 15

Any two objects are attracted to each other by _____ .

Accepted Answer

A) gravity 
B) electrostatic forces 
C) magnetism 
D) all of them 
A) gravity 
B) electrostatic forces 
C) magnetism 
D) all of them

Question 16

You are saving for a new $1226 (including taxes)laptop computer using earnings from your part-time job.  At that job, you work 20 hours\week, earning $10.25\hour take home pay.  If you can save 25% of all of your income, how many weeks will it take for you to save enough money?

Accepted Answer

A) 48 weeks 
B) 24 weeks 
C) 12 weeks 
D) 6 weeks 
A) 48 weeks 
B) 24 weeks 
C) 12 weeks 
D) 6 weeks

Question 17

Knowing that 1 g = 0.035 oz and 16 ounces = 1 lb, calculate the number of grams in 10 pounds.

Accepted Answer

A) 35 
B) 0.56 
C) 1.8 
D) 4.6 × 103 
A) 35 
B) 0.56 
C) 1.8 
D) 4.6 × 103

Question 18

Match between columns
                        Premises:  Molecules that contain two or more kinds of atoms

Accepted Answer

The Answer of Polyatomic molecules and Triatomic molecules and Heteroatomic is...

Question 19

A patient weights 220 lbs. A medication for this patient is supposed to be taken 3 mg per kg per day. The correct dose for this patient is 3000 mg per day.

Accepted Answer

A) True 
 B)False

Question 20

You are able to carry a maximum of 20 kg. What is the maximum volume of gold that you can carry?  (Au has a density of 19.6 g\cm3)

Accepted Answer

A) 392 cm3 
B) 1.0 × 103 cm3 
C) 0.98 cm3 
D) none of these 
A) 392 cm3 
B) 1.0 × 103 cm3 
C) 0.98 cm3 
D) none of these

Exam 1: Matter, Measurements, and Calculations

Which of the following substances are composed of heteroatomic molecules?

Over the counter (OTC)medicines are dangerous because they are not regulated.

A Celsius degree is the same size as a Kelvin degree.

One can always rely on the health information found on the world wide web.

Which of the following consists of a single chemical species?

If 6526 is added to 15.0, the answer should have two significant figures.

Two pure substances A and B react to form a new pure substance C. From this, we may conclude that

Which of the following set-ups will allow you to calculate the cost of fruit in dollars per gram, if the price is given as 0.79 dollars per pound?

Explain the differences between physical and chemical changes with examples.

The fact that iron (Fe)corrodes when exposed to water and air is a

Explain the differences between a pure substance and a mixture with examples.

The figure shown below is an example of what type of molecule?

How many significant figures are justified in a measurement of a length that is between 9 and 10 centimeters if the measuring device (ruler)has smallest divisions of 0.1 cm?

Any two objects are attracted to each other by _____ .

You are saving for a new $1226 (including taxes)laptop computer using earnings from your part-time job. At that job, you work 20 hours\week, earning $10.25\hour take home pay. If you can save 25% of all of your income, how many weeks will it take for you to save enough money?

Knowing that 1 g = 0.035 oz and 16 ounces = 1 lb, calculate the number of grams in 10 pounds.

A patient weights 220 lbs. A medication for this patient is supposed to be taken 3 mg per kg per day. The correct dose for this patient is 3000 mg per day.

You are able to carry a maximum of 20 kg. What is the maximum volume of gold that you can carry? (Au has a density of 19.6 g\cm3)

Atoms and Molecules

Electronic Structure and the Periodic Law

Forces Between Particles

Chemical Reactions

The States of Matter

Solutions and Colloids

Reaction Rates and Equilibrium

Acids, Bases, and Salts

Radioactivity and Nuclear Processes

Organic Compounds: Alkanes

Unsaturated Hydrocarbons

Alcohols, Phenols, and Ethers

Aldehydes and Ketones

Carboxylic Acids and Esters

Amines and Amides

Carbohydrates

Lipids

Proteins

Enzymes

Nucleic Acids and Protein Synthesis

Nutrition and Energy for Life

Carbohydrate Metabolism

Lipid and Amino Acid Metabolism

Body Fluids

Filters

You are able to carry a maximum of 20 kg. What is the maximum volume of gold that you can carry? (Au has a density of 19.6 g\cm³)