Question 1

Do the following calculation and express the answer using the correct number of significant figures.   ______ = (342)× (0.0012)÷ 100.0

Accepted Answer

A) 0.00410 
B) 0.0041 
C) 4.10 × 10 − 3 
D) 0.004104 
A) 0.00410 
B) 0.0041 
C) 4.10 × 10 − 3 
D) 0.004104

Question 2

Which of the following is not one of the five key body characteristics that provide a good assessment of a person's overall health?

Accepted Answer

A) blood pressure 
B) blood cholesterol 
C) body fat 
D) age 
A) blood pressure 
B) blood cholesterol 
C) body fat 
D) age

Question 3

Express the following "generic" number in standard notation.    X.XX × 104

Accepted Answer

A) 0.000XXX 
B) XX,X00 
C) X,XX0 
D) 0.00XXX 
A) 0.000XXX 
B) XX,X00 
C) X,XX0 
D) 0.00XXX

Question 4

One system of rating food is to determine its energy density in kcal\g.  If your 200 g snack contains 100 g fat (900 cal\g)and  a total of 100 g of protein and carbohydrates (400 cal\gram).  What is its energy density?

Accepted Answer

A) 1.3 kcal\g 
B) 6.5 kcal\g 
C) 9.0 kcal\g 
D) 13 kcal\g 
A) 1.3 kcal\g 
B) 6.5 kcal\g 
C) 9.0 kcal\g 
D) 13 kcal\g

Question 5

Which of the following is a derived unit of the S.I. system?

Accepted Answer

A) kilogram 
B) meter 
C) liter 
D) mole 
A) kilogram 
B) meter 
C) liter 
D) mole

Question 6

A monoatomic molecule cannot be reduced to a simpler chemical.

Accepted Answer

A) True 
 B)False

Question 7

The fact that gold does not corrode is a ______ property

Accepted Answer

A) physical 
B) personal 
C) real 
D) chemical 
A) physical 
B) personal 
C) real 
D) chemical

Question 8

If 3333 is divided by 5.0, the answer should have two significant figures.

Accepted Answer

A) True 
 B)False

Question 9

A sample of urine is measured to have the density of 1.15 g\mL which is an indicator that there may be a medical problem.

Accepted Answer

A) True 
 B)False

Question 10

Convert a temperature of 76 ° F to a Celsius value.

Accepted Answer

A) 10 
B) 24 
C) 44 
D) 169 
A) 10 
B) 24 
C) 44 
D) 169

Question 11

Table salt, NaCl is best classified as a(n)_____ .

Accepted Answer

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

Question 12

Match between columns
                        Premises:  Molecules that contain more than three atoms

Accepted Answer

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

Question 13

Henna is a hair coloring that causes a permanent change in color until the hair grows out. Henna is regulated as both a drug and a cosmetic because the change is permanent.

Accepted Answer

A) True 
 B)False

Question 14

On a cold winter day the weather report gives the temperature as -5.0° F.  What would this temperature be if reported on the Kevin scale?

Accepted Answer

A) 252 K 
B) 258 K 
C) 268 K 
D) -20.6 K 
A) 252 K 
B) 258 K 
C) 268 K 
D) -20.6 K

Question 15

Which of the following is a chemical property of matter?

Accepted Answer

A) color 
B) density 
C) freezing point 
D) flammability 
A) color 
B) density 
C) freezing point 
D) flammability

Question 16

The melting of ice to liquid water is correctly classified as

Accepted Answer

A) a chemical change. 
B) a physical change. 
C) both a chemical and a physical change. 
D) neither a chemical nor physical change. 
A) a chemical change. 
B) a physical change. 
C) both a chemical and a physical change. 
D) neither a chemical nor physical change.

Question 17

Which of the following properties is characteristic of a mixture?

Accepted Answer

A) constant composition 
B) variation of physical properties 
C) fixed melting point. 
D) cannot be physically separated into simpler materials 
A) constant composition 
B) variation of physical properties 
C) fixed melting point. 
D) cannot be physically separated into simpler materials

Question 18

Body density can be used to determine the amount of fat carried by an individual because the density of muscle is greater than that of fat.

Accepted Answer

A) True 
 B)False

Question 19

If a 50 gram sample of iron alloy contains 40 grams if iron, it contains 80% iron by weight.

Accepted Answer

A) True 
 B)False

Question 20

Which number has the greatest number of significant digits?

Accepted Answer

A) 1.0035 
B) 17.5000 
C) 0.0000625 
D) 6.022 × 1023 
A) 1.0035 
B) 17.5000 
C) 0.0000625 
D) 6.022 × 1023

Exam 1: Matter, Measurements, and Calculations

Do the following calculation and express the answer using the correct number of significant figures. ______ = (342)× (0.0012)÷ 100.0

Which of the following is not one of the five key body characteristics that provide a good assessment of a person's overall health?

Express the following "generic" number in standard notation. X.XX × 104

One system of rating food is to determine its energy density in kcal\g. If your 200 g snack contains 100 g fat (900 cal\g)and a total of 100 g of protein and carbohydrates (400 cal\gram). What is its energy density?

Which of the following is a derived unit of the S.I. system?

A monoatomic molecule cannot be reduced to a simpler chemical.

The fact that gold does not corrode is a ______ property

If 3333 is divided by 5.0, the answer should have two significant figures.

A sample of urine is measured to have the density of 1.15 g\mL which is an indicator that there may be a medical problem.

Convert a temperature of 76 ° F to a Celsius value.

Table salt, NaCl is best classified as a(n)_____ .

Henna is a hair coloring that causes a permanent change in color until the hair grows out. Henna is regulated as both a drug and a cosmetic because the change is permanent.

On a cold winter day the weather report gives the temperature as -5.0° F. What would this temperature be if reported on the Kevin scale?

Which of the following is a chemical property of matter?

The melting of ice to liquid water is correctly classified as

Which of the following properties is characteristic of a mixture?

Body density can be used to determine the amount of fat carried by an individual because the density of muscle is greater than that of fat.

If a 50 gram sample of iron alloy contains 40 grams if iron, it contains 80% iron by weight.

Which number has the greatest number of significant digits?

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

Express the following "generic" number in standard notation. X.XX × 10⁴