Question 1

Which of the following has more protons than electrons?

Accepted Answer

A) Mg+2 
B) Al 
C) P-3 
D) O-2 
A) Mg+2 
B) Al 
C) P-3 
D) O-2 A

Question 2

Which element would have a similar chemical reactivity in water as K?

Accepted Answer

A) Ca 
B) Ar 
C) Rb 
D) H 
A) Ca 
B) Ar 
C) Rb 
D) H C

Question 3

Write the atomic symbols for the following neutral isotopes.
-strontium-90

Accepted Answer

atomic number 38, mass number 90, symbol Sr

Question 4

Why are the elements in Group VIIIA called the "noble gases"?

Accepted Answer

By and large, they a

Question 5

A 3.45 gram sample of hematite (Fe2O3)that contains 2.41 grams of Fe has what percentage Fe by mass?

Accepted Answer

A) 40% 
B) 30% 
C) 70% 
D) 60% 
A) 40% 
B) 30% 
C) 70% 
D) 60%

Question 6

Which of the following elements may have a cation that has 16 electrons?

Accepted Answer

A) Si 
B) P 
C) S 
D) Cl 
A) Si 
B) P 
C) S 
D) Cl

Question 7

Sulfur belongs to the chalcogen family.

Accepted Answer

A) True 
 B)False

Question 8

Earth's gravitational force is incapable of keeping the atmospheric helium from escaping into space.

Accepted Answer

A) True 
 B)False

Question 9

Which of the following pairs are isotopes?

Accepted Answer

A) (Ca+2 and Mg+2) 
B) (199Hg and 200Hg) 
C) (18O and 19F) 
D) (238U and 238Np) 
A) (Ca+2 and Mg+2) 
B) (199Hg and 200Hg) 
C) (18O and 19F) 
D) (238U and 238Np)

Question 10

Mercury is the only metal that is a liquid at room temperature.

Accepted Answer

A) True 
 B)False

Question 11

Which is expected to be the most chemically similar element to phosphorus?

Accepted Answer

A) S 
B) As 
C) Se 
D) O 
A) S 
B) As 
C) Se 
D) O

Question 12

Radium is the only noble gas that is radioactive.

Accepted Answer

A) True 
 B)False

Question 13

What is the charge on a neutron, proton, and electron?

Accepted Answer

A) 0, -1, +1 
B) (0, 0, -1) 
C) (0, +1, -1) 
D) (-1, +1, -1) 
A) 0, -1, +1 
B) (0, 0, -1) 
C) (0, +1, -1) 
D) (-1, +1, -1)

Question 14

Group VIIIA of the periodic table contains elements that are gaseous non-metals.

Accepted Answer

A) True 
 B)False

Question 15

Which has more electrons?

Accepted Answer

A) Br- 
B) Sr+2 
C) Rb 
D) As+3 
A) Br- 
B) Sr+2 
C) Rb 
D) As+3

Question 16

What name is commonly given to the elements of Group IA of the periodic table?

Accepted Answer

A) Alkaline earth metals 
B) Transition metals 
C) Platinum metals 
D) Alkali metals 
A) Alkaline earth metals 
B) Transition metals 
C) Platinum metals 
D) Alkali metals

Question 17

Platinum is used in the catalytic converters of the cars.

Accepted Answer

A) True 
 B)False

Question 18

An atomic mass unit, also known as amu, is equal to ________ the mass of a 12C atom.

Accepted Answer

A) 1/2 
B) 1/12 
C) 1/6 
D) 1/1840 
A) 1/2 
B) 1/12 
C) 1/6 
D) 1/1840

Question 19

Which of the following elements is an actinide?

Accepted Answer

A) Np 
B) Pr 
C) W 
D) Fr 
A) Np 
B) Pr 
C) W 
D) Fr

Question 20

Which of the following is the correct symbolic representation of the lead-209 isotope?

Accepted Answer

A)    
B)    
C)    
D)    
A)    
B)    
C)    
D)

Which of the following has more protons than electrons?

Which element would have a similar chemical reactivity in water as K?

Write the atomic symbols for the following neutral isotopes. -strontium-90

Why are the elements in Group VIIIA called the "noble gases"?

A 3.45 gram sample of hematite (Fe₂O₃)that contains 2.41 grams of Fe has what percentage Fe by mass?

Which of the following elements may have a cation that has 16 electrons?

Sulfur belongs to the chalcogen family.

Earth's gravitational force is incapable of keeping the atmospheric helium from escaping into space.

Which of the following pairs are isotopes?

Mercury is the only metal that is a liquid at room temperature.

Which is expected to be the most chemically similar element to phosphorus?

Radium is the only noble gas that is radioactive.

What is the charge on a neutron, proton, and electron?

Group VIIIA of the periodic table contains elements that are gaseous non-metals.

Which has more electrons?

What name is commonly given to the elements of Group IA of the periodic table?

Platinum is used in the catalytic converters of the cars.

An atomic mass unit, also known as amu, is equal to ________ the mass of a ¹²C atom.

Which of the following elements is an actinide?

Which of the following is the correct symbolic representation of the lead-209 isotope?

What Is Chemistry

The Numerical Side of Chemistry

The Modern Model of the Atom

Chemical Bonding and Nomenclature

The Shape of Molecules

Intermolecular Forces and the Phases of Matter

Chemical Reactions

Stoichiometry and the Mole

Electron Transfer in Chemical Reactions

What If There Were No Intermolecular Forces the Ideal Gas

Solutions

When Reactants Turn Into Products

Chemical Equilibrium

Electrolytes, Acids, and Bases

Nuclear Chemistry

The Chemistry of Carbon

Synthetic and Biological Polymers

Filters

Exam 3: The Evolution of Atomic Theory

Which of the following has more protons than electrons?

Which element would have a similar chemical reactivity in water as K?

Write the atomic symbols for the following neutral isotopes. -strontium-90

Why are the elements in Group VIIIA called the "noble gases"?

A 3.45 gram sample of hematite (Fe2O3)that contains 2.41 grams of Fe has what percentage Fe by mass?

Which of the following elements may have a cation that has 16 electrons?

Sulfur belongs to the chalcogen family.

Earth's gravitational force is incapable of keeping the atmospheric helium from escaping into space.

Which of the following pairs are isotopes?

Mercury is the only metal that is a liquid at room temperature.

Which is expected to be the most chemically similar element to phosphorus?

Radium is the only noble gas that is radioactive.

What is the charge on a neutron, proton, and electron?

Group VIIIA of the periodic table contains elements that are gaseous non-metals.

Which has more electrons?

What name is commonly given to the elements of Group IA of the periodic table?

Platinum is used in the catalytic converters of the cars.

An atomic mass unit, also known as amu, is equal to ________ the mass of a 12C atom.

Which of the following elements is an actinide?

Which of the following is the correct symbolic representation of the lead-209 isotope?

What Is Chemistry

The Numerical Side of Chemistry

The Modern Model of the Atom

Chemical Bonding and Nomenclature

The Shape of Molecules

Intermolecular Forces and the Phases of Matter

Chemical Reactions

Stoichiometry and the Mole

Electron Transfer in Chemical Reactions

What If There Were No Intermolecular Forces the Ideal Gas

Solutions

When Reactants Turn Into Products

Chemical Equilibrium

Electrolytes, Acids, and Bases

Nuclear Chemistry

The Chemistry of Carbon

Synthetic and Biological Polymers

Filters

A 3.45 gram sample of hematite (Fe₂O₃)that contains 2.41 grams of Fe has what percentage Fe by mass?

An atomic mass unit, also known as amu, is equal to ________ the mass of a ¹²C atom.