Question 1

Do the following calculation and express the answer using the correct number of significant figures. ______ = (1.21 *10-3 + 1.3 *10-3)* 6.453 *102

Accepted Answer

A) 1.619 
B) 2 
C) 1.6 
D) 1.62 
A) 1.619 
B) 2 
C) 1.6 
D) 1.62

Question 2

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 3

The number twelve,representing a dozen,has two significant figures.

Accepted Answer

A) True 
 B)False

Question 4

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

Question 5

Do the following calculation and express the answer using correct scientific notation. ______ = (2.97 *102)*0 (6.09*10-7)

Accepted Answer

A) 5.53 * 103 
B) 1.81*10-4 
C) 4.88 * 108 
D) 2.05 * 10-9 
A) 5.53 * 103 
B) 1.81*10-4 
C) 4.88 * 108 
D) 2.05 * 10-9

Question 6

The number 6730.0 contains five significant figures.

Accepted Answer

A) True 
 B)False

Question 7

Convert a temperature of 76 $\degree$F to a Celsius value.

Accepted Answer

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

Question 8

Which of the following represents a physical change in matter?

Accepted Answer

A) A substance solidifies at 443 K. 
B) A substance produces a gas and a solid when heated. 
C) A substance burns when heated. 
D) A substance changes color when exposed to air. 
A) A substance solidifies at 443 K. 
B) A substance produces a gas and a solid when heated. 
C) A substance burns when heated. 
D) A substance changes color when exposed to air.

Question 9

A hiker began a hike with a pint canteen full of water.One pint equals 16 fluid ounces.At the end of the hike,7.0 fluid ounces of water remained.What percent of the water was used during the hike?

Accepted Answer

A) 78 
B) 44 
C) 56 
D) 13 
A) 78 
B) 44 
C) 56 
D) 13

Question 10

Early measurements of length were based on

Accepted Answer

A) dimensions of astronomical bodies. 
B) dimensions of the human body. 
C) dimensions of bodies of water. 
D) distances between cities. 
A) dimensions of astronomical bodies. 
B) dimensions of the human body. 
C) dimensions of bodies of water. 
D) distances between cities.

Question 11

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

Accepted Answer

A) True 
 B)False

Question 12

Convert 30.0 $\degree$C to Fahrenheit.

Accepted Answer

A) 112 
B) 86.0 
C) 48.7 
D) 34.4 
A) 112 
B) 86.0 
C) 48.7 
D) 34.4

Question 13

To convert micrograms to grams,you should multiply by 1,000,000 g/microgram.

Accepted Answer

A) True 
 B)False

Question 14

Which of the following numbers is correctly expressed using scientific notation?

Accepted Answer

A) 3489 
B) 5.248 * 104 
C) 45.78 * 106 
D) .0987 * 103 
A) 3489 
B) 5.248 * 104 
C) 45.78 * 106 
D) .0987 * 103

Question 15

A weight loss program that incorporates both dietary change and an exercise program is a guarantee of a reshaping of the body and a loss of weight.

Accepted Answer

A) True 
 B)False

Question 16

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 17

Do the following calculation,and express the answer using correct scientific notation. ______ = (6.00 *1023)* (3.00)/ (284)

Accepted Answer

A) 6.34 *1021 
B) 1.58* 10-22 
C) 6.34 *10F-2 
D) 15.8 
A) 6.34 *1021 
B) 1.58* 10-22 
C) 6.34 *10F-2 
D) 15.8

Question 18

How is the weight of an object influenced when the gravitational force on the object is increased?

Accepted Answer

A) it decreases 
B) it increases 
C) it is unchanged 
D) it equals the mass 
A) it decreases 
B) it increases 
C) it is unchanged 
D) it equals the mass

Question 19

The prefix centi- denotes what fraction of a basic unit?

Accepted Answer

A) 1/10 
B) 1/100 
C) 1/1000 
D) 1000 
A) 1/10 
B) 1/100 
C) 1/1000 
D) 1000

Question 20

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

Exam 1: Matter, measurements, and Calculations

Do the following calculation and express the answer using the correct number of significant figures. ______ = (1.21 *10-3 + 1.3 *10-3)* 6.453 *102

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

The number twelve,representing a dozen,has two significant figures.

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)

Do the following calculation and express the answer using correct scientific notation. ______ = (2.97 *102)*0 (6.09*10-7)

The number 6730.0 contains five significant figures.

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

Which of the following represents a physical change in matter?

A hiker began a hike with a pint canteen full of water.One pint equals 16 fluid ounces.At the end of the hike,7.0 fluid ounces of water remained.What percent of the water was used during the hike?

Early measurements of length were based on

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

Convert 30.0 °\degree° C to Fahrenheit.

To convert micrograms to grams,you should multiply by 1,000,000 g/microgram.

Which of the following numbers is correctly expressed using scientific notation?

A weight loss program that incorporates both dietary change and an exercise program is a guarantee of a reshaping of the body and a loss of weight.

Any two objects are attracted to each other by _____ .

Do the following calculation,and express the answer using correct scientific notation. ______ = (6.00 *1023)* (3.00)/ (284)

How is the weight of an object influenced when the gravitational force on the object is increased?

The prefix centi- denotes what fraction of a basic unit?

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?

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

Do the following calculation and express the answer using the correct number of significant figures. ______ = (1.21 10^-³ + 1.3 10^-³)* 6.453 *10²

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)

Do the following calculation and express the answer using correct scientific notation. ______ = (2.97 10²)0 (6.09*10^-⁷)

Convert a temperature of 76 $\degree$ F to a Celsius value.

Convert 30.0 $\degree$ C to Fahrenheit.

Do the following calculation,and express the answer using correct scientific notation. ______ = (6.00 10²³) (3.00)/ (284)