Question 1

Which is an example of a homogeneous mixture?

Accepted Answer

A)  chocolate chip cookie 
B)  a rock collection 
C)  glucose solution 
D)  oil & vinegar salad dressing 
A)  chocolate chip cookie 
B)  a rock collection 
C)  glucose solution 
D)  oil & vinegar salad dressing C

Question 2

Which of the following is a property of both solids and liquids?

Accepted Answer

A)  definite shape 
B)  indefinite shape 
C)  definite volume 
D)  indefinite volume 
A)  definite shape 
B)  indefinite shape 
C)  definite volume 
D)  indefinite volume C

Question 3

As two liquid solutions are added together, a yellow solid forms. This change is most likely:

Accepted Answer

A)  a physical change 
B)  a chemical change 
C)  neither 
D)  both 
A)  a physical change 
B)  a chemical change 
C)  neither 
D)  both D

Question 4

Which of the following statements about compounds and mixtures is correct?

Accepted Answer

A)  Since two or more simpler substances can be obtained from a compound, all compounds are mixtures. 
B)  Compounds cannot be broken down into simpler substances by chemical means. 
C)  Mixtures retain the properties of their individual components. 
D)  Compounds always have properties that are identical to those of the elements used to produce them. 
A)  Since two or more simpler substances can be obtained from a compound, all compounds are mixtures. 
B)  Compounds cannot be broken down into simpler substances by chemical means. 
C)  Mixtures retain the properties of their individual components. 
D)  Compounds always have properties that are identical to those of the elements used to produce them.

Question 5

Which statement is true about elements?

Accepted Answer

A)  Elements have similar symbols and names. 
B)  Element names are derived either from geographical names or from the plants. 
C)  The first letter of any chemical symbol is capitalized. 
D)  The elements whose symbols are derived from non-English names are the recently found elements. 
A)  Elements have similar symbols and names. 
B)  Element names are derived either from geographical names or from the plants. 
C)  The first letter of any chemical symbol is capitalized. 
D)  The elements whose symbols are derived from non-English names are the recently found elements.

Question 6

Indicate whether the following descriptions of matter represents an
-One substance present, one phase present, substancecannot be decomposed by chemical means. ____________________

Accepted Answer

A)  element 
B)  mixture 
C)  compound 
A)  element 
B)  mixture 
C)  compound

Question 7

Indicate whether each of the following statements represents a chemical change, a physical change, or no change occurred.
-A red piece of copper wire is added to a beakercontaining hydrochloric acid (a clear, colorless solution).After an hour a red wire is observed in a clear,colorless solution. ____________________

Accepted Answer

The answer of Indicate whether each of the following statements...

Question 8

In which pair does the symbol not match the name of the element?

Accepted Answer

A)  nitrogen - N 
B)  iron - Fe 
C)  strontium - Sr 
D)  arsenic - Ar 
A)  nitrogen - N 
B)  iron - Fe 
C)  strontium - Sr 
D)  arsenic - Ar

Question 9

Gallium has a melting point of 30 °C and a boiling point of 2403 °C. At which temperature below will gallium be a gas?

Accepted Answer

A)  -25 °C 
B)  25 °C 
C)  250 °C 
D)  2500 °C 
A)  -25 °C 
B)  25 °C 
C)  250 °C 
D)  2500 °C

Question 10

In which of the following sequences of elements do each of the elements have a symbol which starts with a letter not the first letter of the element's English name?

Accepted Answer

A)  silver, gold, mercury 
B)  copper, helium, neon 
C)  cobalt, chromium, sodium 
D)  argon, iron, lead 
A)  silver, gold, mercury 
B)  copper, helium, neon 
C)  cobalt, chromium, sodium 
D)  argon, iron, lead

Question 11

Which of the following is a chemical property?

Accepted Answer

A)  condensation 
B)  mass 
C)  solubility 
D)  burning 
A)  condensation 
B)  mass 
C)  solubility 
D)  burning

Question 12

Indicate whether each of the following statements represents a chemical change, a physical change, or no change occurred.
-Candle wax is burned. ____________________

Accepted Answer

The answer of Indicate whether each of the following statements...

Question 13

A solid substance is subjected to a number of tests and observations. Which of the following test results would not be classified as a physical property of the substance?

Accepted Answer

A)  It reacts with base to form water. 
B)  Its density is 1.84 g/mL. 
C)  It tastes sour. 
D)  It is a white-colored solid. 
A)  It reacts with base to form water. 
B)  Its density is 1.84 g/mL. 
C)  It tastes sour. 
D)  It is a white-colored solid.

Question 14

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 can be decomposed by chemical means

Accepted Answer

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

Question 15

Choose the incorrect response concerning the substances listed below.
I. iron
II. neon
III. iodized table salt
IV. cola
V. steam

Accepted Answer

A)  III can be decomposed by chemical means. 
B)  III and IV represent mixtures. 
C)  I and II represent elements. 
D)  I, II, III, IV and V represent pure substances. 
A)  III can be decomposed by chemical means. 
B)  III and IV represent mixtures. 
C)  I and II represent elements. 
D)  I, II, III, IV and V represent pure substances.

Question 16

Which of the following is a physical change?

Accepted Answer

A)  burning coal 
B)  synthesis of methane from carbon and hydrogen 
C)  smoking a cigarette 
D)  filtering muddy water 
A)  burning coal 
B)  synthesis of methane from carbon and hydrogen 
C)  smoking a cigarette 
D)  filtering muddy water

Question 17

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, 3 phases present

Accepted Answer

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

Question 18

A pure substance has been isolated in the laboratory. Based on the two characteristics below, how can the substance be classified?
I. The species cannot be separated by physical means.
II. The species can be separated by chemical means.

Accepted Answer

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

Question 19

Fill in the missing chemical symbol or element name for each of the following pairs.
‪

Accepted Answer

The answer of Fill in the missing chemical symbol or...

Question 20

Indicate whether each of the following statements represents a chemical change, a physical change, or no change occurred.
-A chunk of cheddar cheese is grated. ____________________

Accepted Answer

The answer of Indicate whether each of the following statements...

Which is an example of a homogeneous mixture?

Which of the following is a property of both solids and liquids?

As two liquid solutions are added together, a yellow solid forms. This change is most likely:

Which of the following statements about compounds and mixtures is correct?

Which statement is true about elements?

Indicate whether the following descriptions of matter represents an -One substance present, one phase present, substancecannot be decomposed by chemical means. ____________________

In which pair does the symbol not match the name of the element?

Gallium has a melting point of 30 °C and a boiling point of 2403 °C. At which temperature below will gallium be a gas?

In which of the following sequences of elements do each of the elements have a symbol which starts with a letter not the first letter of the element's English name?

Which of the following is a chemical property?

Indicate whether each of the following statements represents a chemical change, a physical change, or no change occurred. -Candle wax is burned. ____________________

A solid substance is subjected to a number of tests and observations. Which of the following test results would not be classified as a physical property of the substance?

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 can be decomposed by chemical means

Choose the incorrect response concerning the substances listed below. I. iron II. neon III. iodized table salt IV. cola V. steam

Which of the following is a physical change?

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, 3 phases present

A pure substance has been isolated in the laboratory. Based on the two characteristics below, how can the substance be classified? I. The species cannot be separated by physical means. II. The species can be separated by chemical means.

Fill in the missing chemical symbol or element name for each of the following pairs. ‪

Indicate whether each of the following statements represents a chemical change, a physical change, or no change occurred. -A chunk of cheddar cheese is grated. ____________________

The Science of Chemistry

Numbers From Measurements

Unit Systems and Dimensional Analysis

Atoms, Molecules, Formulas, and Subatomic Particles

Electronic Structure and Chemical Periodicity

Chemical Bonds

Chemical Nomenclature

Chemical Calculations: the Mole Concept and Chemical Formulas

Chemical Calculations Involving Chemical Equations

States of Matter

Gas Laws

Solutions

Acids, Bases and Salts

Oxidation and Reduction

Reaction Rates and Chemical Equilibrium

Nuclear Chemistry

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Exam 4: Basic Concepts About Matter

Which is an example of a homogeneous mixture?

Which of the following is a property of both solids and liquids?

As two liquid solutions are added together, a yellow solid forms. This change is most likely:

Which of the following statements about compounds and mixtures is correct?

Which statement is true about elements?

Indicate whether the following descriptions of matter represents an -One substance present, one phase present, substancecannot be decomposed by chemical means. ____________________

In which pair does the symbol not match the name of the element?

Gallium has a melting point of 30 °C and a boiling point of 2403 °C. At which temperature below will gallium be a gas?

In which of the following sequences of elements do each of the elements have a symbol which starts with a letter not the first letter of the element's English name?

Which of the following is a chemical property?

Indicate whether each of the following statements represents a chemical change, a physical change, or no change occurred. -Candle wax is burned. ____________________

A solid substance is subjected to a number of tests and observations. Which of the following test results would not be classified as a physical property of the substance?

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 can be decomposed by chemical means

Choose the incorrect response concerning the substances listed below. I. iron II. neon III. iodized table salt IV. cola V. steam

Which of the following is a physical change?

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, 3 phases present

A pure substance has been isolated in the laboratory. Based on the two characteristics below, how can the substance be classified? I. The species cannot be separated by physical means. II. The species can be separated by chemical means.

Fill in the missing chemical symbol or element name for each of the following pairs. ‪

Indicate whether each of the following statements represents a chemical change, a physical change, or no change occurred. -A chunk of cheddar cheese is grated. ____________________

The Science of Chemistry

Numbers From Measurements

Unit Systems and Dimensional Analysis

Atoms, Molecules, Formulas, and Subatomic Particles

Electronic Structure and Chemical Periodicity

Chemical Bonds

Chemical Nomenclature

Chemical Calculations: the Mole Concept and Chemical Formulas

Chemical Calculations Involving Chemical Equations

States of Matter

Gas Laws

Solutions

Acids, Bases and Salts

Oxidation and Reduction

Reaction Rates and Chemical Equilibrium

Nuclear Chemistry

Filters