Question 1

The schematic below illustrates the breakdown of a compound via chemical means. Identify the products (as elements or compounds) formed at the end of chemical means 1 and the products formed at the end of chemical means 2.

Accepted Answer

chemical means 1: W-...

Question 2

How many total atoms are contained in the following formula: KAl(SO4) 2 ?

Accepted Answer

A)   4
B)   12
C)   10
D)   7

Question 3

Indicate whether the following descriptions of matter represents an
-Two elements present, composition is variable. ____________________

Accepted Answer

A)   element
B)   mixture
C)   compound

Question 4

Which of the following statements does not describe a physical property?

Accepted Answer

A)   Sparks are created when sodium metal is added to water.
B)   A strip of magnesium metal weighs 7.49 grams.
C)   Snow forms in the clouds via deposition.
D)   Mercury is a liquid at room temperature.

Question 5

Which statement best describes a sample of gas?

Accepted Answer

A)   A gas has a definite volume and a definite shape.
B)   The volume and the shape of a gas are determined by its container.
C)   A gas has a definite volume, but its shape is determined by its container.
D)   The volume of a gas is determined by its container, but it has a definite shape.

Question 6

For each characterization of matter, choose the appropriate classification from the response list. Responses may be used more than once or need not be used at all.
-  2 substances present, 1 phase present

Accepted Answer

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

Question 7

Which response contains all of the following that are physical changes and no chemical changes?
I. Candle wax melts.
II. Skin turns yellow when it comes in contact with nitric acid.
III. Milk curdles.
IV. Ice floats on water.
V. Windows fog when the temperature drops rapidly.

Accepted Answer

A)   II and IV
B)   I, III, and V
C)   II and III
D)   I, IV, and V

Question 8

Which of the following is not a chemical change?

Accepted Answer

A)   frying an egg
B)   rusting of iron
C)   slicing a ham
D)   burning a candle

Question 9

For each characterization of matter, choose the appropriate classification from the response list. Responses may be used more than once or need not be used at all.
- 1 substance present, 1 phase present, substance cannot be decomposed by chemical means

Accepted Answer

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

Question 10

In which of the following pairs are both chemical properties?

Accepted Answer

A)   has metallic luster, soluble in ammonia
B)   flammable, reacts with acid
C)   green in color, reacts violently with water
D)   has a high density, is very brittle

Question 11

In which of the following time periods was the greatest number of elements discovered?

Accepted Answer

A)   ancient - 1700
B)   1701 - 1800
C)   1801 - 1900
D)   1901 - present

Question 12

For each set of elements choose the appropriate characterization of the set's elemental symbols from the response list. Responses may be used more than once or need not be used at all.
- oxygen, fluorine, tungsten

Accepted Answer

A)   all symbols have one letter
B)   all symbols have two letters
C)   all symbols start with the same letter
D)   all symbols start with a letter not the first letter of the element's English name

Question 13

The state of matter of a substance is determined by its ________.

Accepted Answer

A)   electrical conductivity
B)   density
C)   temperature
D)   solubility

Question 14

Which of the following type of matter/classification of matter pairs is incorrectly matched?

Accepted Answer

A)   Type of matter: pure goldClassification of matter: element
B)   Type of matter: concreteClassification of matter: homogeneous mixture
C)   Type of matter: fruitcakeClassification of matter: heterogeneous mixture
D)   Type of matter: saline solutionClassification of matter: homogeneous mixture

Question 15

If a tablespoon of table salt is mixed with a tablespoon of water, the resulting solution can be classified as a ________.

Accepted Answer

A)   homogeneous mixture
B)   pure substance
C)   homogeneous pure substance
D)   heterogeneous mixture

Question 16

For each characterization of matter, choose the appropriate classification from the response list. Responses may be used more than once or need not be used at all.
- 1 substance present, 2 phases present, substance cannot be decomposed by chemical means

Accepted Answer

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

Question 17

In which of the following sequences of elements do each of the elements have a two-letter symbol?

Accepted Answer

A)   sodium, lithium, iodine
B)   potassium, fluorine, carbon
C)   tin, hydrogen, iodine
D)   silicon, chlorine, chromium

Question 18

Which of the following is not a pure substance?

Accepted Answer

A)   blood
B)   calcium
C)   sodium bicarbonate
D)   distilled water

Question 19

Which of these is an intensive property?

Accepted Answer

A)   temperature
B)   mass
C)   length
D)   volume

Question 20

Which of the following is a heterogeneous mixture?

Accepted Answer

A)   ice and water
B)   tap water
C)   pure water
D)   gasoline

Exam 4: Basic Concepts About Matter

The schematic below illustrates the breakdown of a compound via chemical means. Identify the products (as elements or compounds) formed at the end of chemical means 1 and the products formed at the end of chemical means 2.

Correct Answerverifiedchemical means 1: W-...View AnswerShow Answer

For each characterization of matter, choose the appropriate classification from the response list. Responses may be used more than once or need not be used at all. - 1 substance present, 1 phase present, substance cannot be decomposed by chemical means

Correct AnswerverifiedShow Answer

For each characterization of matter, choose the appropriate classification from the response list. Responses may be used more than once or need not be used at all. - 1 substance present, 2 phases present, substance cannot be decomposed by chemical means

Correct AnswerverifiedShow Answer

In which of the following sequences of elements do each of the elements have a two-letter symbol?

Correct AnswerverifiedShow Answer

The state of matter of a substance is determined by its ________.

Correct AnswerverifiedShow Answer

How many total atoms are contained in the following formula: KAl(SO4) 2 ?

Correct AnswerverifiedShow Answer

Which response contains all of the following that are physical changes and no chemical changes? I. Candle wax melts. II. Skin turns yellow when it comes in contact with nitric acid. III. Milk curdles. IV. Ice floats on water. V. Windows fog when the temperature drops rapidly.

Correct AnswerverifiedShow Answer

Which of the following type of matter/classification of matter pairs is incorrectly matched?

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Which statement best describes a sample of gas?

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Which of the following is not a pure substance?

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In which of the following pairs are both chemical properties?

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For each characterization of matter, choose the appropriate classification from the response list. Responses may be used more than once or need not be used at all. - 2 substances present, 1 phase present

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Which of these is an intensive property?

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In which of the following time periods was the greatest number of elements discovered?

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If a tablespoon of table salt is mixed with a tablespoon of water, the resulting solution can be classified as a ________.

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Which of the following is not a chemical change?

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Indicate whether the following descriptions of matter represents an -Two elements present, composition is variable. ____________________

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Which of the following is a heterogeneous mixture?

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For each set of elements choose the appropriate characterization of the set's elemental symbols from the response list. Responses may be used more than once or need not be used at all. - oxygen, fluorine, tungsten

Correct AnswerverifiedShow Answer

Which of the following statements does not describe a physical property?

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chemical means 1: W-...
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How many total atoms are contained in the following formula: KAl(SO₄) ₂ ?

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