Question 1

Two atoms that are isotopes of an element contain

Accepted Answer

A)  the same number of electrons and neutrons. 
B)  the same number of protons and neutrons. 
C)  the same number of protons and a different number of neutrons. 
D)  different numbers of protons. 
A)  the same number of electrons and neutrons. 
B)  the same number of protons and neutrons. 
C)  the same number of protons and a different number of neutrons. 
D)  different numbers of protons.

Question 2

A 35 mg dose of iodine-131 with a half-life of 8 days is administered to a patient. How long will it take for the iodine to decay so that there are only about 2 mg remaining?

Accepted Answer

A)  8 days 
B)  16 days 
C)  32 days 
D)  64 days 
A)  8 days 
B)  16 days 
C)  32 days 
D)  64 days

Question 3

Beryllium and magnesium can be predicted to have similar properties because they are in the same ___ on the periodic table.

Accepted Answer

The answer of Beryllium and magnesium can be predicted to...

Question 4

Complete the equation below.

Accepted Answer

The answer of Complete the equation below.
  ...

Question 5

Whereas x-ray works well for bones, the value of a CT scan is that

Accepted Answer

A)  it provides a 3 dimensional view of bones. 
B)  it provides images of the inside of the body. 
C)  it provides a clear picture of gamma rays produced within the tissue. 
D)  it provides images used in studies, such as monitoring sugar usage. 
A)  it provides a 3 dimensional view of bones. 
B)  it provides images of the inside of the body. 
C)  it provides a clear picture of gamma rays produced within the tissue. 
D)  it provides images used in studies, such as monitoring sugar usage.

Question 6

An isotope of lithium contains 3 protons and 4 neutrons. What is the correct notation for this lithium isotope?

Accepted Answer

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

Question 7

An alpha particle is essentially a(n) ___ nucleus.

Accepted Answer

The answer of An alpha particle is essentially a(n) ___...

Question 8

The emission of an alpha particle only decreases the atomic mass of the atom.

Accepted Answer

A) True 
 B)False

Question 9

Which statement is correct?

Accepted Answer

A)  Cr is in period 6B. 
B)  Fe is a transition metal. 
C)  Mg is an alkali metal. 
D)  Cl is an inert gas. 
A)  Cr is in period 6B. 
B)  Fe is a transition metal. 
C)  Mg is an alkali metal. 
D)  Cl is an inert gas.

Question 10

Choose the incorrect statement about the proton:

Accepted Answer

A)  The proton has the atomic mass of 1 amu. 
B)  The proton has the same charge as the neutron. 
C)  The proton has greater mass than an electron. 
D)  The proton and the neutron have approximately the same atomic mass. 
A)  The proton has the atomic mass of 1 amu. 
B)  The proton has the same charge as the neutron. 
C)  The proton has greater mass than an electron. 
D)  The proton and the neutron have approximately the same atomic mass.

Question 11

What is the relationship of a metal atom to the right of another metal atom in the same period?

Accepted Answer

A)  The atom to the right is usually the smaller in diameter. 
B)  The atom to the right is usually the smaller in atomic weight. 
C)  The atom to the right is usually the smaller in atomic number. 
D)  The atom to the right is more likely to have fewer isotopes. 
A)  The atom to the right is usually the smaller in diameter. 
B)  The atom to the right is usually the smaller in atomic weight. 
C)  The atom to the right is usually the smaller in atomic number. 
D)  The atom to the right is more likely to have fewer isotopes.

Question 12

An atom contains 12 protons and 12 neutrons, and a different atom contains 10 protons and 12 neutrons. These two atoms are not isotopes.

Accepted Answer

A) True 
 B)False

Question 13

Which of the following is the correct order of elements in increasing atomic radius: K, Mg, B?

Accepted Answer

A)  K<Mg<B 
B)  B<Mg<K 
C)  Mg<K<B 
D)  B<K<Mg 
A)  K<Mg<B 
B)  B<Mg<K 
C)  Mg<K<B 
D)  B<K<Mg

Question 14

Draw the electron dot structure for a selenium (Se) atom.

Accepted Answer

The answer of Draw the electron dot structure for a...

Question 15

What is the minimum protection against exposure to beta particles?

Accepted Answer

A)  None, beta particles are of low energy and cannot penetrate skin. 
B)  Gloves, a lab coat, or over a meter's distance from the source. 
C)  A thin sheet of plastic or metal. 
D)  A sheet of lead. 
A)  None, beta particles are of low energy and cannot penetrate skin. 
B)  Gloves, a lab coat, or over a meter's distance from the source. 
C)  A thin sheet of plastic or metal. 
D)  A sheet of lead.

Question 16

Glucose molecules produced during photosynthesis contain higher levels of carbon-12 than carbon -13 because

Accepted Answer

A)  carbon -12 reacts slightly slower than carbon-13. 
B)  carbon-12 has more electrons than carbon -13. 
C)  carbon-12 reacts slightly faster than carbon-13. 
D)  carbon-13 has more number of protons than carbon -12. 
A)  carbon -12 reacts slightly slower than carbon-13. 
B)  carbon-12 has more electrons than carbon -13. 
C)  carbon-12 reacts slightly faster than carbon-13. 
D)  carbon-13 has more number of protons than carbon -12.

Question 17

The atom's structure characteristically has

Accepted Answer

A)  the protons and neutron within the nucleus. 
B)  the electrons located outside the nucleus. 
C)  mostly empty space. 
D)  All of these choices are correct. 
A)  the protons and neutron within the nucleus. 
B)  the electrons located outside the nucleus. 
C)  mostly empty space. 
D)  All of these choices are correct.

Question 18

Which of the following is not a type of subatomic particle?

Accepted Answer

A)  alpha particle 
B)  electron 
C)  neutron 
D)  proton 
A)  alpha particle 
B)  electron 
C)  neutron 
D)  proton

Question 19

has how many protons, neutrons, and electrons?

Accepted Answer

A)  12 protons, 23 neutrons, and 23 electrons 
B)  12 protons, 11 neutrons, and 11 electrons 
C)  23 protons, 11 neutrons, and 23 electrons 
D)  12 protons, 11 neutrons, and 12 electrons 
A)  12 protons, 23 neutrons, and 23 electrons 
B)  12 protons, 11 neutrons, and 11 electrons 
C)  23 protons, 11 neutrons, and 23 electrons 
D)  12 protons, 11 neutrons, and 12 electrons

Two atoms that are isotopes of an element contain

A 35 mg dose of iodine-131 with a half-life of 8 days is administered to a patient. How long will it take for the iodine to decay so that there are only about 2 mg remaining?

Beryllium and magnesium can be predicted to have similar properties because they are in the same ___ on the periodic table.

Complete the equation below.

Whereas x-ray works well for bones, the value of a CT scan is that

An isotope of lithium contains 3 protons and 4 neutrons. What is the correct notation for this lithium isotope?

An alpha particle is essentially a(n) ___ nucleus.

The emission of an alpha particle only decreases the atomic mass of the atom.

Which statement is correct?

Choose the incorrect statement about the proton:

What is the relationship of a metal atom to the right of another metal atom in the same period?

An atom contains 12 protons and 12 neutrons, and a different atom contains 10 protons and 12 neutrons. These two atoms are not isotopes.

Which of the following is the correct order of elements in increasing atomic radius: K, Mg, B?

Draw the electron dot structure for a selenium (Se) atom.

What is the minimum protection against exposure to beta particles?

Glucose molecules produced during photosynthesis contain higher levels of carbon-12 than carbon -13 because

The atom's structure characteristically has

Which of the following is not a type of subatomic particle?

has how many protons, neutrons, and electrons?

Science and Measurements

Compounds

An Introduction to Organic Compounds

Reactions

Gases, Solutions, Colloids, and Suspensions

Acids, Bases, and Equilibrium

Organic Reactions Hydrocarbons, Carboxlic Acids, Amines, and Related Compounds

Organic Reactions 2-Alcohols, Ethers, Aldehydes, and Ketones

Carbohydrates

Lipids and Membranes

Peptides, Proteins, and Enzymes

Nucleic Acids

Metabolism

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Exam 2: Atoms and Elements

Two atoms that are isotopes of an element contain

A 35 mg dose of iodine-131 with a half-life of 8 days is administered to a patient. How long will it take for the iodine to decay so that there are only about 2 mg remaining?

Beryllium and magnesium can be predicted to have similar properties because they are in the same ___ on the periodic table.

Complete the equation below.

Whereas x-ray works well for bones, the value of a CT scan is that

An isotope of lithium contains 3 protons and 4 neutrons. What is the correct notation for this lithium isotope?

An alpha particle is essentially a(n) ___ nucleus.

The emission of an alpha particle only decreases the atomic mass of the atom.

Which statement is correct?

Choose the incorrect statement about the proton:

What is the relationship of a metal atom to the right of another metal atom in the same period?

An atom contains 12 protons and 12 neutrons, and a different atom contains 10 protons and 12 neutrons. These two atoms are not isotopes.

Which of the following is the correct order of elements in increasing atomic radius: K, Mg, B?

Draw the electron dot structure for a selenium (Se) atom.

What is the minimum protection against exposure to beta particles?

Glucose molecules produced during photosynthesis contain higher levels of carbon-12 than carbon -13 because

The atom's structure characteristically has

Which of the following is not a type of subatomic particle?

has how many protons, neutrons, and electrons?

Science and Measurements

Compounds

An Introduction to Organic Compounds

Reactions

Gases, Solutions, Colloids, and Suspensions

Acids, Bases, and Equilibrium

Organic Reactions Hydrocarbons, Carboxlic Acids, Amines, and Related Compounds

Organic Reactions 2-Alcohols, Ethers, Aldehydes, and Ketones

Carbohydrates

Lipids and Membranes

Peptides, Proteins, and Enzymes

Nucleic Acids

Metabolism

Filters