Question 1

Alpha particles are heavier than beta particles.

Accepted Answer

A) True 
 B)False

Question 2

How many protons are there in a silver atom?

Accepted Answer

A)  16 
B)  38 
C)  47 
D)  79 
A)  16 
B)  38 
C)  47 
D)  79

Question 3

A cathode is a

Accepted Answer

A)  negatively charged ion. 
B)  positively charged ion. 
C)  negative electrode. 
D)  positive electrode. 
A)  negatively charged ion. 
B)  positively charged ion. 
C)  negative electrode. 
D)  positive electrode.

Question 4

Elements in the same period generally have

Accepted Answer

A)  different properties. 
B)  similar properties. 
C)  similar number of neutrons. 
D)  similar chemical symbols. 
A)  different properties. 
B)  similar properties. 
C)  similar number of neutrons. 
D)  similar chemical symbols.

Question 5

Based upon the experiments of his co-workers, Rutherford proposed that

Accepted Answer

A)  atoms are mostly empty space. 
B)  most of the mass of atoms is located in a dense, small volume nucleus. 
C)  the nucleus is positively charged. 
D)  all of the above 
A)  atoms are mostly empty space. 
B)  most of the mass of atoms is located in a dense, small volume nucleus. 
C)  the nucleus is positively charged. 
D)  all of the above

Question 6

Which element is a nonmetal?

Accepted Answer

A)  calcium 
B)  magnesium 
C)  chlorine 
D)  chromium 
A)  calcium 
B)  magnesium 
C)  chlorine 
D)  chromium

Question 7

Which of the following types of electromagnetic radiation is emitted from unstable elements?

Accepted Answer

A)  gamma rays 
B)  microwaves 
C)  radio waves 
D)  visible light 
A)  gamma rays 
B)  microwaves 
C)  radio waves 
D)  visible light

Question 8

The number of electrons in a neutral atom is equal to the

Accepted Answer

A)  atomic mass. 
B)  atomic number. 
C)  atomic weight. 
D)  number of neutrons. 
A)  atomic mass. 
B)  atomic number. 
C)  atomic weight. 
D)  number of neutrons.

Question 9

How many nucleons are in this isotope of calcium?   Ca

Accepted Answer

A)  66 
B)  46 
C)  20 
D)  16 
A)  66 
B)  46 
C)  20 
D)  16

Question 10

Most of the mass of an atom is located in the electrons of the atom.

Accepted Answer

A) True 
 B)False

Question 11

Describe a cathode ray tube and its significance in determining the subatomic structure of atoms.

Accepted Answer

A cathode ray tube is a vacuum tube that

Question 12

Write the electron configuration for carbon.

Accepted Answer

The electron configuration for carbon (C

Question 13

Calcium has ________ valence electron(s).

Accepted Answer

The answer of Calcium has ________ valence electron(s)....

Question 14

The number of valence electrons determine the properties of an element.

Accepted Answer

A) True 
 B)False

Question 15

Which statement comparing chemical and nuclear properties of isotopes is correct?

Accepted Answer

A)  Isotopes have similar chemical and nuclear properties. 
B)  Isotopes have different chemical and nuclear properties. 
C)  Isotopes have different chemical properties, but generally the same nuclear properties. 
D)  Isotopes generally have the same chemical properties, but often different nuclear properties. 
A)  Isotopes have similar chemical and nuclear properties. 
B)  Isotopes have different chemical and nuclear properties. 
C)  Isotopes have different chemical properties, but generally the same nuclear properties. 
D)  Isotopes generally have the same chemical properties, but often different nuclear properties.

Question 16

Isotopes of an element have the same number of protons but a different number of neutrons.

Accepted Answer

A) True 
 B)False

Question 17

Which orbital will have the lowest energy?

Accepted Answer

A)  3d 
B)  3p 
C)  4s 
D)  2p 
A)  3d 
B)  3p 
C)  4s 
D)  2p

Question 18

The electron configuration for oxygen is 1s2 2s2 3s2.

Accepted Answer

A) True 
 B)False

Question 19

Electrolysis is

Accepted Answer

A)  the production of electrical currents from a battery. 
B)  the chemical reactions caused by electricity. 
C)  the production of cathode rays in vacuum tubes using electricity. 
D)  the conversion of elements into new elements by the use of electricity. 
A)  the production of electrical currents from a battery. 
B)  the chemical reactions caused by electricity. 
C)  the production of cathode rays in vacuum tubes using electricity. 
D)  the conversion of elements into new elements by the use of electricity.

Question 20

The identity of an element is determined by the ________ in the atom.

Accepted Answer

A)  charge 
B)  number of neutrons 
C)  number of nucleons 
D)  number of protons 
A)  charge 
B)  number of neutrons 
C)  number of nucleons 
D)  number of protons

Exam 3: Atomic Structure

Alpha particles are heavier than beta particles.

How many protons are there in a silver atom?

A cathode is a

Elements in the same period generally have

Based upon the experiments of his co-workers, Rutherford proposed that

Which element is a nonmetal?

Which of the following types of electromagnetic radiation is emitted from unstable elements?

The number of electrons in a neutral atom is equal to the

How many nucleons are in this isotope of calcium? Ca

Most of the mass of an atom is located in the electrons of the atom.

Describe a cathode ray tube and its significance in determining the subatomic structure of atoms.

Write the electron configuration for carbon.

Calcium has ________ valence electron(s).

The number of valence electrons determine the properties of an element.

Which statement comparing chemical and nuclear properties of isotopes is correct?

Isotopes of an element have the same number of protons but a different number of neutrons.

Which orbital will have the lowest energy?

The electron configuration for oxygen is 1s2 2s2 3s2.

Electrolysis is

The identity of an element is determined by the ________ in the atom.

Chemistry

Atoms

Chemical Bonds

Chemical Accounting

Gases, Liquids, Solids, and Intermolecular Forces

Acids and Bases

Oxidation and Reduction

Organic Chemistry

Polymers

Nuclear Chemistry

Chemistry of the Earth

Air

Water

Energy

Biochemistry

Food

Drugs

Fitness and Health

Chemistry Down on the Farm

Household Chemicals

Poisons

Filters

The electron configuration for oxygen is 1s² 2s² 3s².