Question 1

Chemical properties of a substance are those that can be observed without changing the composition of a substance.

Accepted Answer

A) True 
 B)False

Question 2

A solid form of matter in which there is long range repeating order is called ________.

Accepted Answer

A)  amorphous
B)  rigid
C)  crystalline
D)  fixed
E)  none of the above

Question 3

The melting of ice is a physical change.

Accepted Answer

A) True 
 B)False

Question 4

What is the value of -25°C on the Kelvin scale?

Accepted Answer

A)  248
B)  -32
C)  -13
D)  -298
E)  none of the above

Question 5

What is the value of 23°C on the Fahrenheit scale?

Accepted Answer

A)  73
B)  52
C)  59
D)  81

Question 6

How many grams of water when supplied with  of heat will gain a temperature of 5.2°C?

Accepted Answer

A)  15
B)  17
C)  19
D)  16
E)  none of the above

Question 7

The amount of heat energy needed to increase the temperature of an object will vary depending on the heat capacity of the object.

Accepted Answer

A) True 
 B)False

Question 8

If a solid piece of shiny sodium metal is exposed to chlorine gas,a large amount of heat is released and the white solid sodium chloride (table salt) forms.Based on this information,which of the following statements is TRUE?

Accepted Answer

A)  This process represents a physical change.
B)  Mass is lost during this process.
C)  Sodium chloride is an element.
D)  This process was exothermic.
E)  none of the above

Question 9

If you hold a solid piece of pure gallium metal in your hand,your body heat will melt the gallium into its liquid form.This illustrates which of the following?

Accepted Answer

A)  distillation
B)  physical change
C)  chemical change
D)  chemical property
E)  none of the above

Question 10

Gases are the only form of matter that is easily compressible.

Accepted Answer

A) True 
 B)False

Question 11

From the following list of substances and heat capacities,choose the one that will have the lowest temperature after absorbing 100.0 kJ of heat.Assume identical masses of each substance start at the same initial temperature.

Accepted Answer

A)  lead-0.128 J/g∙°C
B)  copper-0.385 J/g∙°C
C)  ethanol-2.42 J/g∙°C
D)  water-4.18 J/g∙°C
E)  not enough information

Question 12

Temperatures reported in the Kelvin scale cannot be negative.

Accepted Answer

A) True 
 B)False

Question 13

How many calories are there in a 255 Calorie snack bar?

Accepted Answer

A)  2.55 × 105
B)  1.07 × 103
C)  60.9
D)  1 × 103
E)  none of the above

Question 14

Like mass,energy can neither be created nor destroyed.

Accepted Answer

A) True 
 B)False

Question 15

Which of the following is NOT an example of matter?

Accepted Answer

A)  a pencil eraser
B)  a balloon full of helium
C)  a dust particle
D)  heat from a burning candle
E)  none of the above

Question 16

Which of the following statements is FALSE?

Accepted Answer

A)  Matter may be a pure substance or it may be a mixture.
B)  A pure substance may either be an element or a compound.
C)  A mixture may be either homogeneous or heterogeneous.
D)  Mixtures may be composed of two or more elements,two or more compounds,or a combination of both.
E)  All of the above statements are true.

Question 17

In order,what is the freezing point,room temperature and boiling point of water according to the Celsius scale?

Accepted Answer

A)  32-75-212
B)  0-75-100
C)  0-25-100
D)  0-298-373
E)  none of the above

Question 18

A melting scoop of ice cream is an example of an exothermic process.

Accepted Answer

A) True 
 B)False

Question 19

Matter is defined as anything that is visible to the human eye.

Accepted Answer

A) True 
 B)False

Question 20

Which state of matter has indefinite shape and is compressible?

Accepted Answer

A)  liquid
B)  solid
C)  gas
D)  plasma
E)  none of the above

Exam 3: Matter and Energy

What is the value of -25°C on the Kelvin scale?

Correct AnswerverifiedShow Answer

A solid form of matter in which there is long range repeating order is called ________.

Correct AnswerverifiedShow Answer

Chemical properties of a substance are those that can be observed without changing the composition of a substance.

Correct AnswerverifiedShow Answer

Which of the following statements is FALSE?

Correct AnswerverifiedShow Answer

Which of the following is NOT an example of matter?

Correct AnswerverifiedShow Answer

A melting scoop of ice cream is an example of an exothermic process.

Correct AnswerverifiedShow Answer

Matter is defined as anything that is visible to the human eye.

Correct AnswerverifiedShow Answer

If a solid piece of shiny sodium metal is exposed to chlorine gas,a large amount of heat is released and the white solid sodium chloride (table salt) forms.Based on this information,which of the following statements is TRUE?

Correct AnswerverifiedShow Answer

The melting of ice is a physical change.

Correct AnswerverifiedShow Answer

Temperatures reported in the Kelvin scale cannot be negative.

Correct AnswerverifiedShow Answer

Which state of matter has indefinite shape and is compressible?

Correct AnswerverifiedShow Answer

The amount of heat energy needed to increase the temperature of an object will vary depending on the heat capacity of the object.

Correct AnswerverifiedShow Answer

What is the value of 23°C on the Fahrenheit scale?

Correct AnswerverifiedShow Answer

Like mass,energy can neither be created nor destroyed.

Correct AnswerverifiedShow Answer

How many calories are there in a 255 Calorie snack bar?

Correct AnswerverifiedShow Answer

In order,what is the freezing point,room temperature and boiling point of water according to the Celsius scale?

Correct AnswerverifiedShow Answer

From the following list of substances and heat capacities,choose the one that will have the lowest temperature after absorbing 100.0 kJ of heat.Assume identical masses of each substance start at the same initial temperature.

Correct AnswerverifiedShow Answer

If you hold a solid piece of pure gallium metal in your hand,your body heat will melt the gallium into its liquid form.This illustrates which of the following?

Correct AnswerverifiedShow Answer

Gases are the only form of matter that is easily compressible.

Correct AnswerverifiedShow Answer

How many grams of water when supplied with of heat will gain a temperature of 5.2°C?

Correct AnswerverifiedShow Answer

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