Question 1

Give the number of protons in P3-.

Accepted Answer

A)  18 
B)  12 
C)  19 
D)  15 
E)  16 
A)  18 
B)  12 
C)  19 
D)  15 
E)  16

Question 2

What mass (in kg)does 4.41 moles of copper have?

Accepted Answer

A)  0.352 kg 
B)  0.122 kg 
C)  0.820 kg 
D)  0.280 kg 
E)  0.632 kg 
A)  0.352 kg 
B)  0.122 kg 
C)  0.820 kg 
D)  0.280 kg 
E)  0.632 kg

Question 3

How many atoms are in 5.00 moles of O?

Accepted Answer

A)  4.52 × 1023 atoms 
B)  1.51 × 1024atoms 
C)  5.02 × 1023atoms 
D)  3.01 × 1024 atoms 
E)  3.01 × 1023 atoms 
A)  4.52 × 1023 atoms 
B)  1.51 × 1024atoms 
C)  5.02 × 1023atoms 
D)  3.01 × 1024 atoms 
E)  3.01 × 1023 atoms

Question 4

All samples of a given compound,regardless of their source or how they were prepared,have the same proportions of their constituent elements.Which law does this refer to?

Accepted Answer

A)  Law of Definite Proportions 
B)  Law of the Conservation of Mass 
C)  Law of Modern Atomic Theory 
D)  Law of Multiple Proportions 
E)  First Law of Thermodynamics 
A)  Law of Definite Proportions 
B)  Law of the Conservation of Mass 
C)  Law of Modern Atomic Theory 
D)  Law of Multiple Proportions 
E)  First Law of Thermodynamics

Question 5

How many electrons are in each neutral atom of magnesium?

Accepted Answer

A)  12 
B)  13 
C)  14 
D)  12.3 
E)  24.3 
A)  12 
B)  13 
C)  14 
D)  12.3 
E)  24.3

Question 6

List the element that is in the highest percentage by mass in our bodies.

Accepted Answer

A)  nitrogen 
B)  phosphorus 
C)  oxygen 
D)  silicon 
E)  sodium 
A)  nitrogen 
B)  phosphorus 
C)  oxygen 
D)  silicon 
E)  sodium

Question 7

Which of the following is equal to exactly 1 mole of atoms?

Accepted Answer

A)  6.00 grams of carbon 
B)  30.69 grams of nickel 
C)  12.01 grams of carbon 
D)  12.31 grams of magnesium 
E)  34.00 grams of selenium 
A)  6.00 grams of carbon 
B)  30.69 grams of nickel 
C)  12.01 grams of carbon 
D)  12.31 grams of magnesium 
E)  34.00 grams of selenium

Question 8

Which of the following elements is a metal?

Accepted Answer

A)  Sb 
B)  O 
C)  Br 
D)  Ag 
E)  He 
A)  Sb 
B)  O 
C)  Br 
D)  Ag 
E)  He

Question 9

Predict the charge that a strontium ion would have.

Accepted Answer

A)  6- 
B)  2- 
C)  4- 
D)  2+ 
E)  1+ 
A)  6- 
B)  2- 
C)  4- 
D)  2+ 
E)  1+

Question 10

What is the element symbol for an atom that has 29 protons and 36 neutrons?

Accepted Answer

A)  Cu 
B)  Kr 
C)  N 
D)  Tb 
A)  Cu 
B)  Kr 
C)  N 
D)  Tb

Question 11

How many atoms of carbon are in 4.00 moles of C?

Accepted Answer

A)  7.22 × 1024 atoms 
B)  2.41 × 1024 atoms 
C)  8.00 × 1023 atoms 
D)  3.01 × 1024 atoms 
E)  6.50 × 1023 atoms 
A)  7.22 × 1024 atoms 
B)  2.41 × 1024 atoms 
C)  8.00 × 1023 atoms 
D)  3.01 × 1024 atoms 
E)  6.50 × 1023 atoms

Question 12

How many moles of potassium are contained in 200 g of potassium?

Accepted Answer

A)  5.11 moles 
B)  0.956 moles 
C)  13.3 moles 
D)  10.53 moles 
E)  6.46 moles 
A)  5.11 moles 
B)  0.956 moles 
C)  13.3 moles 
D)  10.53 moles 
E)  6.46 moles

Question 13

How many xenon atoms are contained in 2.36 moles of xenon?

Accepted Answer

A)  3.92 × 1024 xenon atoms 
B)  2.55 × 1023 xenon atoms 
C)  1.42 × 1024 xenon atoms 
D)  7.91 × 1025 xenon atoms 
E)  1.87 × 1026 xenon atoms 
A)  3.92 × 1024 xenon atoms 
B)  2.55 × 1023 xenon atoms 
C)  1.42 × 1024 xenon atoms 
D)  7.91 × 1025 xenon atoms 
E)  1.87 × 1026 xenon atoms

Question 14

What is the chemical symbol for thallium?

Accepted Answer

A)  Ti 
B)  Tl 
C)  Tm 
D)  Th 
E)  Tr 
A)  Ti 
B)  Tl 
C)  Tm 
D)  Th 
E)  Tr

Question 15

What does "X" represent in the following symbol?   X

Accepted Answer

A)  silicon 
B)  sulfur 
C)  zinc 
D)  ruthenium 
E)  nickel 
A)  silicon 
B)  sulfur 
C)  zinc 
D)  ruthenium 
E)  nickel

Question 16

Which of the following elements has chemical properties similar to tellurium?

Accepted Answer

A)  bromine 
B)  lithium 
C)  nitrogen 
D)  sulfur 
E)  helium 
A)  bromine 
B)  lithium 
C)  nitrogen 
D)  sulfur 
E)  helium

Question 17

Which of the following elements is NOT a solid at room temperature?

Accepted Answer

A)  Mn 
B)  Cr 
C)  Hg 
D)  Mg 
E)  Na 
A)  Mn 
B)  Cr 
C)  Hg 
D)  Mg 
E)  Na

Question 18

Semiconductors are

Accepted Answer

A)  metalloids. 
B)  noble gases. 
C)  nonmetals. 
D)  metals. 
A)  metalloids. 
B)  noble gases. 
C)  nonmetals. 
D)  metals.

Question 19

How many protons (p)and neutrons (n)are in an atom of   Ac?

Accepted Answer

A)  89 p, 138 n 
B)  89 p, 227 n 
C)  138 p, 89 n 
D)  227 p, 89 n 
A)  89 p, 138 n 
B)  89 p, 227 n 
C)  138 p, 89 n 
D)  227 p, 89 n

Question 20

Determine the number of protons,neutrons,and electrons in the following:   X

Accepted Answer

A)  p+ = 18 n° = 18 e- = 22 
B)  p+ = 18 n° = 22 e- = 18 
C)  p+ = 22 n° = 18 e- = 18 
D)  p+ = 18 n° = 22 e- = 40 
E)  p+ = 40 n° = 22 e- = 18 
A)  p+ = 18 n° = 18 e- = 22 
B)  p+ = 18 n° = 22 e- = 18 
C)  p+ = 22 n° = 18 e- = 18 
D)  p+ = 18 n° = 22 e- = 40 
E)  p+ = 40 n° = 22 e- = 18

Exam 2: Atoms and Elements

Give the number of protons in P3-.

What mass (in kg)does 4.41 moles of copper have?

How many atoms are in 5.00 moles of O?

All samples of a given compound,regardless of their source or how they were prepared,have the same proportions of their constituent elements.Which law does this refer to?

How many electrons are in each neutral atom of magnesium?

List the element that is in the highest percentage by mass in our bodies.

Which of the following is equal to exactly 1 mole of atoms?

Which of the following elements is a metal?

Predict the charge that a strontium ion would have.

What is the element symbol for an atom that has 29 protons and 36 neutrons?

How many atoms of carbon are in 4.00 moles of C?

How many moles of potassium are contained in 200 g of potassium?

How many xenon atoms are contained in 2.36 moles of xenon?

What is the chemical symbol for thallium?

What does "X" represent in the following symbol? X

Which of the following elements has chemical properties similar to tellurium?

Which of the following elements is NOT a solid at room temperature?

Semiconductors are

How many protons (p)and neutrons (n)are in an atom of Ac?

Determine the number of protons,neutrons,and electrons in the following: X

Matter, measurement, and Problem Solving

Molecules,compounds,and Chemical Equations

Chemical Quantities and Aqueous Reactions

Gases

Thermochemistry

The Quantum-Mechanical Model of the Atom

Periodic Properties of the Elements

Chemical Bonding I: Lewis Theory

Chemical Bonding Ii: Molecular Shapes,valence Bond Theory,

Liquids,solids,and Intermolecular Forces

Solids and Modern Materials

Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Aqueous Ionic Equilibrium

Free Energy and Thermodynamics

Electrochemistry

Radioactivity and Nuclear Chemistry

Organic Chemistry

Biochemistry

Chemistry of the Nonmetals

Metals and Metallurgy

Transition Metals and Coordination Compounds

Filters

Give the number of protons in P^3-.