Question 1

Write the electron arrangement for the atom shown.
-Sodium

Accepted Answer

The answer of Write the electron arrangement for the atom...

Question 2

The ionization energy of atoms ________.

Accepted Answer

A) decreases going across a period 
B) decreases going down within a group 
C) increases going down within a group 
D) does not change going down within a group 
E) none of the above 
A) decreases going across a period 
B) decreases going down within a group 
C) increases going down within a group 
D) does not change going down within a group 
E) none of the above

Question 3

Match between columns
                        Premises: chlorine
calcium
copper
carbon
cobalt

Accepted Answer

The Answer of Cl and Co and Ca and C is...

Question 4

Write the symbol from the element name.
-The symbol for sodium is ________.

Accepted Answer

The answer of Write the symbol from the element name.
-The...

Question 5

The atomic number of an atom is equal to the number of ________.

Accepted Answer

A) nuclei 
B) neutrons 
C) neutrons plus protons 
D) electrons plus protons 
E) protons 
A) nuclei 
B) neutrons 
C) neutrons plus protons 
D) electrons plus protons 
E) protons

Question 6

Write the symbol from the element name.
-The symbol for sulfur is ________.

Accepted Answer

The answer of Write the symbol from the element name.
-The...

Question 7

Sulfur is a nonmetal.

Accepted Answer

A) True 
 B)False

Question 8

How many protons are in an isotope of sodium with a mass number of 25?

Accepted Answer

A) 11 
B) 14 
C) 15 
D) 25 
E) 32 
A) 11 
B) 14 
C) 15 
D) 25 
E) 32

Question 9

The correct symbol for the isotope of potassium with 22 neutrons is ________.

Accepted Answer

A)    K 
B)    K 
C)    P 
D)    P 
E)    K 
A)    K 
B)    K 
C)    P 
D)    P 
E)    K

Question 10

Semiconductors are located in the periodic table on (or in)the ________.

Accepted Answer

A) left side of the table 
B) right side of the table 
C) line dividing metals from nonmetals in the table 
D) first period of the table 
E) last period of the table 
A) left side of the table 
B) right side of the table 
C) line dividing metals from nonmetals in the table 
D) first period of the table 
E) last period of the table

Question 11

Write the electron arrangement for the atom shown.
-Argon

Accepted Answer

The answer of Write the electron arrangement for the atom...

Question 12

Atomic size decreases going from left to right within a period.

Accepted Answer

A) True 
 B)False

Question 13

The atomic mass of an element is equal to ________.

Accepted Answer

A) its mass number 
B) its atomic number 
C) one-twelfth of the mass of a carbon-12 atom 
D) the mass of an "average atom" 
E) the mass of the heaviest isotope 
A) its mass number 
B) its atomic number 
C) one-twelfth of the mass of a carbon-12 atom 
D) the mass of an "average atom" 
E) the mass of the heaviest isotope

Question 14

What elements are in hydroxyapatite,       OH,a major compound in human bones and teeth?

Accepted Answer

A) carbon,potassium,oxygen,hydrogen 
B) calcium,phosphorous,oxygen,hydrogen 
C) carbon,phosphorous,oxygen,helium 
D) calcium,phosphorous,oxygen,helium 
E) carbon,potassium,oxygen,helium 
A) carbon,potassium,oxygen,hydrogen 
B) calcium,phosphorous,oxygen,hydrogen 
C) carbon,phosphorous,oxygen,helium 
D) calcium,phosphorous,oxygen,helium 
E) carbon,potassium,oxygen,helium

Question 15

Consider an isotope of sodium with a mass number of 25.The number of neutrons in this isotope of sodium is ________.

Accepted Answer

A) 11 
B) 14 
C) 16 
D) 25 
E) 32 
A) 11 
B) 14 
C) 16 
D) 25 
E) 32

Question 16

Ca is the symbol for

Accepted Answer

A) calcium. 
B) carbon. 
C) cobalt. 
D) copper. 
E) cadmium. 
A) calcium. 
B) carbon. 
C) cobalt. 
D) copper. 
E) cadmium.

Question 17

Which of the following is not true for the atoms 13N,14N,and 15N?

Accepted Answer

A) They all have the same mass number. 
B) They are isotopes. 
C) They all have the same atomic number. 
D) They all have 7 protons. 
E) They all have 7 electrons. 
A) They all have the same mass number. 
B) They are isotopes. 
C) They all have the same atomic number. 
D) They all have 7 protons. 
E) They all have 7 electrons.

Question 18

Ionization energy increases going down a group.

Accepted Answer

A) True 
 B)False

Question 19

According to the atomic theory,________.

Accepted Answer

A) all atoms are different 
B) atoms are neither created nor destroyed during a chemical reaction 
C) atoms of the same element combine to form compounds 
D) all matter is made up of tiny particles called electrons 
E) a compound can contain different numbers of atoms as long as it has the same kinds of atoms 
A) all atoms are different 
B) atoms are neither created nor destroyed during a chemical reaction 
C) atoms of the same element combine to form compounds 
D) all matter is made up of tiny particles called electrons 
E) a compound can contain different numbers of atoms as long as it has the same kinds of atoms

Question 20

Which of the following elements is a nonmetal?

Accepted Answer

A) nitrogen 
B) sodium 
C) iron 
D) silver 
E) calcium 
A) nitrogen 
B) sodium 
C) iron 
D) silver 
E) calcium

Write the electron arrangement for the atom shown. -Sodium

The ionization energy of atoms ________.

Write the symbol from the element name. -The symbol for sodium is ________.

The atomic number of an atom is equal to the number of ________.

Write the symbol from the element name. -The symbol for sulfur is ________.

Sulfur is a nonmetal.

How many protons are in an isotope of sodium with a mass number of 25?

The correct symbol for the isotope of potassium with 22 neutrons is ________.

Semiconductors are located in the periodic table on (or in)the ________.

Write the electron arrangement for the atom shown. -Argon

Atomic size decreases going from left to right within a period.

The atomic mass of an element is equal to ________.

What elements are in hydroxyapatite, OH,a major compound in human bones and teeth?

Consider an isotope of sodium with a mass number of 25.The number of neutrons in this isotope of sodium is ________.

Ca is the symbol for

Which of the following is not true for the atoms¹³N,¹⁴N,and ¹⁵N?

Ionization energy increases going down a group.

According to the atomic theory,________.

Which of the following elements is a nonmetal?

Chemistry in Our Lives

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Matter and Energy

Nuclear Chemistry

Ionic and Molecular Compounds

Chemical Quantities and Reactions

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Acids and Bases and Equilibrium

Introduction to Organic Chemistry: Hydrocarbons

Alcohols, Thiols, Ethers, Aldehydes, and Ketones

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Carboxylic Acids, Esters, Amines, and Amides

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Exam 4: Atoms and Elements

Write the electron arrangement for the atom shown. -Sodium

The ionization energy of atoms ________.

Write the symbol from the element name. -The symbol for sodium is ________.

The atomic number of an atom is equal to the number of ________.

Write the symbol from the element name. -The symbol for sulfur is ________.

Sulfur is a nonmetal.

How many protons are in an isotope of sodium with a mass number of 25?

The correct symbol for the isotope of potassium with 22 neutrons is ________.

Semiconductors are located in the periodic table on (or in)the ________.

Write the electron arrangement for the atom shown. -Argon

Atomic size decreases going from left to right within a period.

The atomic mass of an element is equal to ________.

What elements are in hydroxyapatite, OH,a major compound in human bones and teeth?

Consider an isotope of sodium with a mass number of 25.The number of neutrons in this isotope of sodium is ________.

Ca is the symbol for

Which of the following is not true for the atoms 13N,14N,and 15N?

Ionization energy increases going down a group.

According to the atomic theory,________.

Which of the following elements is a nonmetal?

Chemistry in Our Lives

Chemistry and Measurement

Matter and Energy

Nuclear Chemistry

Ionic and Molecular Compounds

Chemical Quantities and Reactions

Gases

Solutions

Acids and Bases and Equilibrium

Introduction to Organic Chemistry: Hydrocarbons

Alcohols, Thiols, Ethers, Aldehydes, and Ketones

Carbohydrates

Carboxylic Acids, Esters, Amines, and Amides

Lipids

Amino Acids, Proteins, and Enzymes

Nucleic Acids and Protein Synthesis

Metabolic Pathways and Energy Production

Filters

Which of the following is not true for the atoms¹³N,¹⁴N,and ¹⁵N?